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40x+(-11x)-(-8x)-42x=40
We simplify the equation to the form, which is simple to understand
40x+(-11x)-(-8x)-42x=40
Remove unnecessary parentheses
+40x-11x-(-8x+)-42x=+40
Remove unnecessary parentheses
40x-11x+8x-42x=40
We move all terms containing x to the left and all other terms to the right.
+40x-11x+8x-42x=+40
We simplify left and right side of the equation.
-5x=+40
We divide both sides of the equation by -5 to get x.
x=-8
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