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15+x=654.75
We simplify the equation to the form, which is simple to understand
15+x=654.75
We move all terms containing x to the left and all other terms to the right.
+1x=+654.75-15
We simplify left and right side of the equation.
+1x=+639.75
We divide both sides of the equation by 1 to get x.
x=639.75
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