2(20-x)+5x=85.

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Solution for 2(20-x)+5x=85. equation: 



2(20-x)+5x=85.

We move all terms to the left:

2(20-x)+5x-(85.)=0

We add all the numbers together, and all the variables

2(-1x+20)+5x-85=0

We add all the numbers together, and all the variables

5x+2(-1x+20)-85=0

We multiply parentheses

5x-2x+40-85=0

We add all the numbers together, and all the variables

3x-45=0

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

3x=45

x=45/3

x=15

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