4(2a-9)=28

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Solution for 4(2a-9)=28 equation: 



4(2a-9)=28

We move all terms to the left:

4(2a-9)-(28)=0

We multiply parentheses

8a-36-28=0

We add all the numbers together, and all the variables

8a-64=0

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

8a=64

a=64/8

a=8

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