3(14a-12)=90

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Solution for 3(14a-12)=90 equation: 



3(14a-12)=90

We move all terms to the left:

3(14a-12)-(90)=0

We multiply parentheses

42a-36-90=0

We add all the numbers together, and all the variables

42a-126=0

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

42a=126

a=126/42

a=3

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