3(x-20)=15.

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Solution for 3(x-20)=15. equation: 



3(x-20)=15.

We move all terms to the left:

3(x-20)-(15.)=0

We add all the numbers together, and all the variables

3(x-20)-15=0

We multiply parentheses

3x-60-15=0

We add all the numbers together, and all the variables

3x-75=0

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

3x=75

x=75/3

x=25

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