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7x+11x=126
We simplify the equation to the form, which is simple to understand
7x+11x=126
We move all terms containing x to the left and all other terms to the right.
+7x+11x=+126
We simplify left and right side of the equation.
+18x=+126
We divide both sides of the equation by 18 to get x.
x=7
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