77=4x+3(x+7)

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Solution for 77=4x+3(x+7) equation:


77=4x+3(x+7)

We simplify the equation to the form, which is simple to understand 
77=4x+3(x+7)

Reorder the terms in parentheses
77=4x+(+3x+21)

Remove unnecessary parentheses
+77=+4x+3x+21

We move all terms containing x to the left and all other terms to the right. 
-4x-3x=+21-77

We simplify left and right side of the equation. 
-7x=-56

We divide both sides of the equation by -7 to get x. 
x=8

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