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4(3-x)-5(1-2x)=7(3+x)
We simplify the equation to the form, which is simple to understand
4(3-x)-5(1-2x)=7(3+x)
Reorder the terms in parentheses
+(+12-4x)-5*(1-2x)=7*(3+x)
Remove unnecessary parentheses
+12-4x-5+*(+1-2x+)=+7+*(+3+x+)
Reorder the terms in parentheses
+12-4x+(-5+10x)=7*(3+x)
Remove unnecessary parentheses
+12-4x-5+10x=+7+*(+3+x+)
Reorder the terms in parentheses
+12-4x-5+10x=+(+21+7x)
Remove unnecessary parentheses
+12-4x-5+10x=+21+7x
We move all terms containing x to the left and all other terms to the right.
-4x+10x-7x=+21-12+5
We simplify left and right side of the equation.
-1x=+14
We divide both sides of the equation by -1 to get x.
x=-14
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