7th Grade Math Help?

Question

This is the problem,

-2 over 3 + 6 and one eigth.

I cannot figure this problem out.

Also....

-3 and two fifths - five sixths????

I do not understand these problems, any help is appreciated.

Answer 1

Sorry, it's hard to know exactly what the problem is with the way you notated it.

Is it -2/3 + 6 1/8?
If so, then this is equivalent to -2/3 + 49/8; convert to 24ths and add together to get (-16+147)/24 or 131/24 or 5 11/24.

Is it -2/(3+6) + 1/8?
If so, then this is equivalent to -2/9 + 1/8; convert to 72nds to get (-16+9)/72, or 7/72.

Follow the same path for the second one.

Good luck!

Answer 2

It's not obvious to compare 3/8 and 2/3, but look at it this way: would you rather slice a pie into 3 pieces and take two (2/3 of a pie), or slice it into 8 pieces and take 3 (3/8 of a pie)? If you like pie, you will probably make the first choice, and that's because 2/3 is greater than 3/8. Thus 3/8 < 2/3. The math way to do it is to multiply the left sides by 3/3 and the right side by 8/8 (both are fancy ways of writing 1). Then you have 9/24 on the left side and 16/24 on the right side. Now the number on the bottom is the same and it's much easier to compare; clearly 9/24 < 16/24. In other words, you're slicing the pie into 24 pieces; 3/8 of the pie is the same as taking 9 pieces, and 2/3 of the pie is the same as taking 16 pieces.

Answer 3

Are these fraction problems?? Like

-2 / 3 + 6&1/8 = ?
first convert to all fractions, -2/3 + 49/8
then convert to common denominator, -16/24 + 147/24
Then do the math, -16 + 147 = 131/24
Simplify = 5&11/24ths

-3&2/5 - 5/6 = ??
-17/5 - 5/6
-102/30 - 25/30
-102-25 = -127 / 30
=4&7/30

If that's what you're talking about, those are the answers I believe.

Answer 4

For one thing, 6 and one eighth is an improper fraction that can be converted to 49/8. We have to make the denominator equal to that of the first term. -2/3 + 49/8 can be converted to -16/24 + 147/24 = 131/24.

-3 and 2/5 can be converted to -17/5. -17/5-5/6 needs to be converted to have common denominators. So it becomes -102/30-25/30 = -127/30.

Answer 5

i believe , i'm not positive but i'm 93% sure that it may be
that you change the improper fraction 6 and 1 8th to a proper fraction u will get 49 over 8 and then u will find the common denominator (L.C.M)for 3 and 8 and u will get 24 then u will add the -2 and 49 and u will get -47 so now u have 47 over 24 u need to divide it and see what u will get
and the process is the same for the other 1
hope i helped good luck

Answer 6

-2/3 +6 = -2/3 +18/3
make the denominators the same
= 16/3
add negative + positive = positive - negative

-3 2/5 - 5/6= -17/5 -5/6
convert to fraction
-3 2/5 - 5/6= -102/30 -25/30
the least common factor between 5 and 6 is 30, then make the denominators the same

= -127/30
negative - (positive or negative)= positive + positive

Answer 7

First one:
-2 over 9 1/8 is the same as -2 divided by 9 1/8. 9 1/8 is the same as 9.125. So -2 divided by 9.125. Get a calculater.. The answer is -.219178. Prove it by multiplying -.219178 times 9.125 on the calculater. It equals -2.

Second one:
-3 2/5 less 5/6. Divide 2 by 5 and you get .4 So -3.4

Do the same with the 5/6. Divide 5 by six and the answer is .833.

So the new equation is -3.4-.833.

Add it up -3.4
- .83
The answer is -4.23

Answer 8

-2/3 + 61/8?

First since they are different signs I suggest you change the second fraction into an improper one

-2/3 + 49/8 then find common denominators

-16/24 + 147/24

now because they are different signs subtract their absolute values (numerator) and you get

131/24 ... from there reduce back to a mixed number ... you should be able to do the same for the second problem! good luck!

Answer 9

-2/3 + 6 1/8
you need to find common denominators..
and make the 6 1/8 an improper fraction.. =]]
then add straight across..

Answer 10

Try and find a common denominator then multiply ever fraction by that number. That will give all the fractions the same bottom number. Then add the fractions and simplify. Same goes for the other one.