4(3a-6)=42

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Solution for 4(3a-6)=42 equation: 



4(3a-6)=42

We move all terms to the left:

4(3a-6)-(42)=0

We multiply parentheses

12a-24-42=0

We add all the numbers together, and all the variables

12a-66=0

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

12a=66

a=66/12

a=5+1/2

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