English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories
1

ok... 3/5 - 7/2x = 3/10

Steps please I got 3/35 and the answer is 35/3 ...so I flipped something somewhere..

2007-06-20 02:53:07 · 8 answers · asked by Shameless 3 in Science & Mathematics Mathematics

8 answers

3/5 - 7/2x = 3/10
multiply all by 10
6 - 35/x =3
multiply all by x
6x -35 = 3x
subtract 3x from both sides
3x-35 = 0
add 35 to both sides
3x = 35
divide both sides by 3
x = 35/3

2007-06-20 02:59:01 · answer #1 · answered by jeremy s 2 · 1 0

Read this question again carefully
3 / 5 - 7 / (2x) = 3 / 10
'x' is in denominator not in numerator
Steps : -
- 7 / (2x) = 3 / 10 - 3 / 5,
- 7 / (2x) = - 3 / 10,
Now,
x = 70 / 6 = 35 / 3.

2007-06-20 10:03:06 · answer #2 · answered by Vedic Astrologer 3 · 0 0

3/5 - 7/2x = 3/10

I'm not sure where the 'x' lies in this expression. I came up with 2 probables.

PROBABLE 1
is it: 3/5 - 7/(2x) = 3/10

multiply both sides by 10x,
6x - 35 = 3x
6x - 3x = 35
3x = 35
x = 35/3



or



PROBABLE 2
is it: 3/5 - (7/2)x = 3/10

multiply both sides by 10,
6 - 35x = 3
35x = 6 - 3 = 3
x = 3/35


okay, it seems that the position of your 'x' is like in PROBABLE 2, whereas the answer is based on 'x' like in PROBABLE 1.

2007-06-20 10:20:30 · answer #3 · answered by jurassicko 4 · 0 0

If the question is...
3/5 - (7/2)x = 3/10

First, subtract the (3/5)

-(7/2)x = 3/10 - 3/5
-(7/2)x = 3/10 - 6/10
-(7/2)x = -3/10

Now multiply by (-2/7)

x = (-3/10)(-2/7) = 6/70 = 3/35

**********************************
If the question is
3/5 - 7/(2x) = 3/10

First subtract the (3/5)
-7/(2x) = 3/10 - 3/5
-7/(2x) = -3/10

Cross multiply...
-7(10) = -3(2x)
-70 = -6x
-70 / -6 = x
70 / 6 = x
35 / 3 = x

2007-06-20 10:01:00 · answer #4 · answered by Mathematica 7 · 0 0

Brackets must be used to clarify questions such as this.
If questiion is:
3/5 - (7/2).x = 3 / 10-----(X by 10)
6 - 35 x = 3
35x = 3
x = 3 / 35

However if question is:-
3/5 - 7 / (2x) = 3 / 10------(X by 10x)
6x - 35 = 3x
3x = 35
x = 35 / 3

Take your pick!

2007-06-20 10:56:26 · answer #5 · answered by Como 7 · 0 0

3/5 - 7/2x = 3/10
or, -7/2x = 3/10 - 3/5
or, -7/2x = (3 - 6)/10
or, -7/2x = -3/10
minus sign on both sides cancel out
or 70 = 6x
or x= 70 /6=35/3

2007-06-20 10:01:14 · answer #6 · answered by The 1 Who Thinks HE Knows!!!!! 2 · 0 0

multiply all terms by 10x to get rid of the demoninators and you get
6x - 35 = 3x
3x = 35
x= 35/3

2007-06-20 09:57:56 · answer #7 · answered by bz2hcy 3 · 0 0

is it the question given or is it a problem sum???

2007-06-20 09:57:29 · answer #8 · answered by Neda 3 · 0 0

fedest.com, questions and answers