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4(3x+5)+7(3x-4)=0
We simplify the equation to the form, which is simple to understand
4(3x+5)+7(3x-4)=0
Reorder the terms in parentheses
+(+12x+20)+7*(3x-4)=0
Remove unnecessary parentheses
+12x+20+7+*(+3x-4+)=0
Reorder the terms in parentheses
+12x+20+(+21x-28)=0
Remove unnecessary parentheses
+12x+20+21x-28=0
We move all terms containing x to the left and all other terms to the right.
+12x+21x=0-20+28
We simplify left and right side of the equation.
+33x=+8
We divide both sides of the equation by 33 to get x.
x=0.24242424242424
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