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18+7x-12+5=0
We simplify the equation to the form, which is simple to understand
18+7x-12+5=0
We move all terms containing x to the left and all other terms to the right.
+7x=0-18+12-5
We simplify left and right side of the equation.
+7x=-11
We divide both sides of the equation by 7 to get x.
x=-1.5714285714286
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