20a-4(a-6)=56

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Solution for 20a-4(a-6)=56 equation: 



20a-4(a-6)=56

We move all terms to the left:

20a-4(a-6)-(56)=0

We multiply parentheses

20a-4a+24-56=0

We add all the numbers together, and all the variables

16a-32=0

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

16a=32

a=32/16

a=2

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