7(x-1)+2x=20

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Solution for 7(x-1)+2x=20 equation: 



7(x-1)+2x=20

We move all terms to the left:

7(x-1)+2x-(20)=0

We add all the numbers together, and all the variables

2x+7(x-1)-20=0

We multiply parentheses

2x+7x-7-20=0

We add all the numbers together, and all the variables

9x-27=0

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

9x=27

x=27/9

x=3

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