54=-6(4+a)+12

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Solution for 54=-6(4+a)+12 equation: 



54=-6(4+a)+12

We move all terms to the left:

54-(-6(4+a)+12)=0

We add all the numbers together, and all the variables

-(-6(a+4)+12)+54=0



We calculate terms in parentheses: -(-6(a+4)+12), so:

-6(a+4)+12

We multiply parentheses

-6a-24+12

We add all the numbers together, and all the variables

-6a-12

Back to the equation:

-(-6a-12)



We get rid of parentheses

6a+12+54=0

We add all the numbers together, and all the variables

6a+66=0

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

6a=-66

a=-66/6

a=-11

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