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-(5x-15)+4(5x+7)=0
We simplify the equation to the form, which is simple to understand
-(5x-15)+4(5x+7)=0
Remove unnecessary parentheses
-5x+15+4*(5x+7)=0
Reorder the terms in parentheses
-5x+15+(+20x+28)=0
Remove unnecessary parentheses
-5x+15+20x+28=0
We move all terms containing x to the left and all other terms to the right.
-5x+20x=0-15-28
We simplify left and right side of the equation.
+15x=-43
We divide both sides of the equation by 15 to get x.
x=-2.8666666666667
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