168=7(3-7a)

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Solution for 168=7(3-7a) equation:


168=7(3-7a)

We simplify the equation to the form, which is simple to understand 
168=7(3-7a)

Reorder the terms in parentheses
168=+(+21-49a)

Remove unnecessary parentheses
+168=+21-49a

We move all terms containing a to the left and all other terms to the right. 
+49a=+21-168

We simplify left and right side of the equation. 
+49a=-147

We divide both sides of the equation by 049 to get a. 
a=-3

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