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7x+3=7x-x
We simplify the equation to the form, which is simple to understand
7x+3=7x-x
We move all terms containing x to the left and all other terms to the right.
+7x-7x+1x=-3
We simplify left and right side of the equation.
+1x=-3
We divide both sides of the equation by 1 to get x.
x=-3
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