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12x+(13x-19)-(11x-15)=25-(17-13x)
We simplify the equation to the form, which is simple to understand
12x+(13x-19)-(11x-15)=25-(17-13x)
Remove unnecessary parentheses
+12x+13x-19-(+11x-15+)=+25-(+17-13x+)
Remove unnecessary parentheses
12x13x-19-11x+15=25-(17-13x)
Remove unnecessary parentheses
12x13x-19-11x+15=25-17+13x
We move all terms containing x to the left and all other terms to the right.
+12x+13x-11x-13x=+25-17+19-15
We simplify left and right side of the equation.
+1x=+12
We divide both sides of the equation by 1 to get x.
x=12
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