4(a-5)-4=12

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Solution for 4(a-5)-4=12 equation: 



4(a-5)-4=12

We move all terms to the left:

4(a-5)-4-(12)=0

We add all the numbers together, and all the variables

4(a-5)-16=0

We multiply parentheses

4a-20-16=0

We add all the numbers together, and all the variables

4a-36=0

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

4a=36

a=36/4

a=9

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