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7x+1=-2x-12
We simplify the equation to the form, which is simple to understand
7x+1=-2x-12
We move all terms containing x to the left and all other terms to the right.
+7x+2x=-12-1
We simplify left and right side of the equation.
+9x=-13
We divide both sides of the equation by 9 to get x.
x=-1.44444444444
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