-28=8+7(a-3)

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Solution for -28=8+7(a-3) equation:


-28=8+7(a-3)

We simplify the equation to the form, which is simple to understand 
-28=8+7(a-3)

Reorder the terms in parentheses
-28=8+(+7a-21)

Remove unnecessary parentheses
-28=+8+7a-21

We move all terms containing a to the left and all other terms to the right. 
-7a=+8-21+28

We simplify left and right side of the equation. 
-7a=+15

We divide both sides of the equation by -07 to get a. 
a=-2.1428571428571

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