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x(3)=7(9)
We simplify the equation to the form, which is simple to understand
x(3)=7(9)
Reorder the terms in parentheses
+(+3x)=7*(9)
Remove unnecessary parentheses
+3x=+7+*(+9+)
Reorder the terms in parentheses
+3x=+(+63)
Remove unnecessary parentheses
+3x=+63
We move all terms containing x to the left and all other terms to the right.
+3x=+63
We simplify left and right side of the equation.
+3x=+63
We divide both sides of the equation by 3 to get x.
x=21
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