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-7(-1+3a)=5(3a-5a)
We simplify the equation to the form, which is simple to understand
-7(-1+3a)=5(3a-5a)
Simplifying terms in parentheses
-7*(-1+3a)=5*(-2a)
Reorder the terms in parentheses
+(+7-21a)=5*(-2a)
Remove unnecessary parentheses
+7-21a=+5+*(-2a+)
Reorder the terms in parentheses
+7-21a=+(-10a)
Remove unnecessary parentheses
+7-21a=-10a
We move all terms containing a to the left and all other terms to the right.
-21a+10a=-7
We simplify left and right side of the equation.
-11a=-7
We divide both sides of the equation by -11 to get a.
a=0.636363636364
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