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17x+12x=87
We simplify the equation to the form, which is simple to understand
17x+12x=87
We move all terms containing x to the left and all other terms to the right.
+17x+12x=+87
We simplify left and right side of the equation.
+29x=+87
We divide both sides of the equation by 29 to get x.
x=3
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