0.15(x+40)-0.02(x-30)=4

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Solution for 0.15(x+40)-0.02(x-30)=4 equation: 



0.15(x+40)-0.02(x-30)=4

We move all terms to the left:

0.15(x+40)-0.02(x-30)-(4)=0

We multiply parentheses

0.15x-0.02x+6+0.6-4=0

We add all the numbers together, and all the variables

0.13x+2.6=0

We move all terms containing x to the left, all other terms to the right

0.13x=-2.6

x=-2.6/0.13

x=-20

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