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x+x-7=15x
We simplify the equation to the form, which is simple to understand
x+x-7=15x
We move all terms containing x to the left and all other terms to the right.
+1x+1x-15x=+7
We simplify left and right side of the equation.
-13x=+7
We divide both sides of the equation by -13 to get x.
x=-0.538461538462
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