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130=7x+7x-10
We simplify the equation to the form, which is simple to understand
130=7x+7x-10
We move all terms containing x to the left and all other terms to the right.
-7x-7x=-10-130
We simplify left and right side of the equation.
-14x=-140
We divide both sides of the equation by -14 to get x.
x=10
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