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0.1(-0.72-4x)=-0.2x

best answer 10 points..

2006-07-11 21:13:54 · 16 answers · asked by :) 2 in Science & Mathematics Mathematics

16 answers

-0.72-4x = (-0.2x)/(0.1)

-0.72-4x = -2x

-0.72 = -2x +4x

-0.72 = 2x

x=(-0.72)/2

x = -0.36

this is the first way of solving.

the second way of solving the equation is as follows.

0.1(-0.72-4x)=-0.2x

-0.072-0.4x = -0.2x

-0.072 = -0.2x+0.4x

-0.072 = 0.2x

x = (-0.072)/0.2

x = (-0.72)/2

x = -0.36

2006-07-11 21:22:25 · answer #1 · answered by rsp_rsp2001 2 · 10 2

1. 0.1(-0.72-4x)=-0.2x
2. 0.1(0.72+4x)=0.2x (multiplying -1 on both sides)
3. 0.72+4x = 2x (multiplying 10 on both sides)
4. 4x-2x = -0.72 (taking 2x on left hand side and 0.72 on right hand side)
5. 2x = -0.72
6. x = -0.36 (dividing by 2)

Do I get the 10 points!!!

2006-07-11 21:22:41 · answer #2 · answered by Suraj 3 · 0 0

0.1(-0.72-4x)= -0.2x

-0.72-4x= -0.2x/0.1(take the 0.1 to right and multiply denominator and numerator by 10)

-0.72-4x= -2x(bring the 4x to the right)

-0.72=4x-2x

-0.72=2x

2x= -0.72(now divide -0.72 with 2)

answer:x= -0.36

2006-07-11 21:26:46 · answer #3 · answered by albert einstein 1 · 0 0

Why? You are not doing your homework again!

Anyways, the answer is:
-0.72 - 4x = -0.2x/0.1
-0.72 - 4x = -2x
-0.72 = -2x + 4x
-0.72 = 2x
x = -0.72/2
x = -0.36

2006-07-11 21:16:15 · answer #4 · answered by Anonymous · 0 0

The simplest solution to this is:

x=0, then the entire equation=0 and that's mathematically correct

:-)

2006-07-11 21:31:01 · answer #5 · answered by curious_charlie 1 · 0 0

-.72-4x = -0.2x/.1
-0.72-4x = -2x
-0.72 = -2x +4x
-0.72 = 2x
x = -0.36

2006-07-11 21:27:02 · answer #6 · answered by Anonymous · 0 0

0.1(-0.72-4x)=-0.2x
-0.72-4x=-0.2x/0.1
-.72-4x=-2x
-0.72=-2x+4x
-0.72=2x
x=-0.72/2
x=0.36

2006-07-11 21:25:23 · answer #7 · answered by vijay 1 · 0 0

0.1(-0.72-4X)= -0.2X
MULTIPLYING
-0.072-0.4X= -0.2X
-0.072= -0.2X+0.4X
-0.072=0.2X
SO,, X= -0.072/0.2
X = 0.36
HENCE THE SOLUTION........

2006-07-11 21:21:27 · answer #8 · answered by rzr_snl 1 · 0 0

it would be easy if i had a calculator but i don't...it would be easy to put it on paper and work it out my self but I'm to lazy for that

2006-07-11 21:18:15 · answer #9 · answered by Bobby P 1 · 0 0

0.1*(-0.72)-4x*0.1=0.2x
-0.072-0.4x=0.2x
-0.072=0.2x+0.4x
0.6x= -0.072
x= -0.072/0.6
x= -0.12

2006-07-11 21:23:53 · answer #10 · answered by Anonymous · 0 0

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