3(5x+x)-3(x-4)=42

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Solution for 3(5x+x)-3(x-4)=42 equation: 



3(5x+x)-3(x-4)=42

We move all terms to the left:

3(5x+x)-3(x-4)-(42)=0

We add all the numbers together, and all the variables

3(+6x)-3(x-4)-42=0

We multiply parentheses

18x-3x+12-42=0

We add all the numbers together, and all the variables

15x-30=0

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

15x=30

x=30/15

x=2

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