And, can you please tell me how you got it?
5x + 2x - 10x simplifies to
a) 17x
b) -3x
c) 3x
d) -7x
2007-06-20 07:05:03 · 9 answers · asked by ☺ Joel ☺ 1 in Education & Reference ➔ Homework Help
The answer is B. 5x+2x=7x. Then, 7x-10x=-3x. And you got it!
2007-06-20 07:26:14 · answer #1 · answered by JJ 4 · 0⤊ 0⤋
The answer is b)-3x
Since they all have the same variable, which is x, you can add the coefficients ( the number before the x)
My math teacher always taught me to zip zap. This means whenever you have a problem with addition and subtraction, such as your problem, then you must change the subtraction symbol to an addition symbol, and make the number after it the opposite of what it is. For example, in 5x+2x-10x, I wanted to make it all addition so I changed the subtraction symbol to an addition symbol, and I changed 10x to -10x. This always helped me in symplifying the problem. Then after you just add all the numbers. 5x+2x=7x, and then 7x+-10x=-3x.
2007-06-20 08:13:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Because all the terms in this problem have the base of x, they can be simplified by adding and subtracting their coefficients.
5x+2x-10x = 7x-10x = -3x
2007-06-20 07:48:19 · answer #3 · answered by William M 2 · 1⤊ 0⤋
the answers is b) -3x
i got it by
going by the PEMDAS
first add the 5x and 2x to get 7x then 7x-10x will get you the
-3x
PEMDAS is
P () parthensis
E * exponents
M Multiply
D division
A Addition
Subtraction
like the order of operations
2007-06-20 07:11:56 · answer #4 · answered by ezekiel's mom 4 · 0⤊ 0⤋
ignore the x's jsut do 5+2=7 amd then subtract 10 from 7 which is negative 3 so the answer is c or 3x
2007-06-20 08:11:51 · answer #5 · answered by aliza c 3 · 0⤊ 0⤋
All of your terms have an x, so just add the coefficients.
5+2-10 = 7-10 = -3
So your answer is B) -3x
2007-06-20 07:09:48 · answer #6 · answered by Becky M 4 · 0⤊ 0⤋
when you consider that i certainly want to help right here, quite of answering, i might want to teach you to do this very certainly. stick to those steps for those one million parameter equations: one million) continually sum each and all of the X adult adult males at the same time 2) Then sum each and all of the non-X adult adult males at the same time on the different component 3) Then divide the two aspects with the aid of the style summed for X to get merely "X" on one component and the respond on the different! occasion on 2nd equation: x+10-7x=-40 4 one million) x+10-7x=-40 4 will become (one million-7)x+10=-40 4 which will become -6x+10=-40 4 2) -6x+10=-40 4 will become -6x=-40 4-10 which will become -6x=-fifty 4 3) -6x=-fifty 4 will become x=-fifty 4/-6 which will become x=9 Voila! satisfied analyzing...
2016-12-13 08:25:51 · answer #7 · answered by Anonymous · 0⤊ 0⤋
5x + 2x - 10x
7x - 10x
-3x
Answer: b
2007-06-20 07:08:45 · answer #8 · answered by zee 2 · 0⤊ 0⤋
b
2007-06-20 07:16:21 · answer #9 · answered by Shawn 2 · 0⤊ 0⤋