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-7=-7x-7x+7
We simplify the equation to the form, which is simple to understand
-7=-7x-7x+7
We move all terms containing x to the left and all other terms to the right.
+7x+7x=+7+7
We simplify left and right side of the equation.
+14x=+14
We divide both sides of the equation by 14 to get x.
x=1
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