6(3-a)=42

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Solution for 6(3-a)=42 equation: 



6(3-a)=42

We move all terms to the left:

6(3-a)-(42)=0

We add all the numbers together, and all the variables

6(-1a+3)-42=0

We multiply parentheses

-6a+18-42=0

We add all the numbers together, and all the variables

-6a-24=0

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

-6a=24

a=24/-6

a=-4

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