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-7(x-3)-4(x+1)=28
We simplify the equation to the form, which is simple to understand
-7(x-3)-4(x+1)=28
Reorder the terms in parentheses
+(-7x+21)-4*(x+1)=28
Remove unnecessary parentheses
-7x+21-4+*(+x+1+)=+28
Reorder the terms in parentheses
-7x+21+(-4x-4)=28
Remove unnecessary parentheses
-7x+21-4x-4=+28
We move all terms containing x to the left and all other terms to the right.
-7x-4x=+28-21+4
We simplify left and right side of the equation.
-11x=+11
We divide both sides of the equation by -11 to get x.
x=-1
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