-3(4+5a)=57

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Solution for -3(4+5a)=57 equation:


-3(4+5a)=57

We simplify the equation to the form, which is simple to understand
-3(4+5a)=57

Reorder the terms in parentheses
+(-12-15a)=57

Remove unnecessary parentheses
-12-15a=+57

We move all terms containing a to the left and all other terms to the right.
-15a=+57+12

We simplify left and right side of the equation.
-15a=+69

We divide both sides of the equation by -15 to get a.
a=-4.6

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