3a-3=3(7-a)

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Solution for 3a-3=3(7-a) equation:


3a-3=3(7-a)

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

Reorder the terms in parentheses
3a-3=+(+21-3a)

Remove unnecessary parentheses
+3a-3=+21-3a

We move all terms containing a to the left and all other terms to the right. 
+3a+3a=+21+3

We simplify left and right side of the equation. 
+6a=+24

We divide both sides of the equation by 6 to get a. 
a=4

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