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15x-30=15x+30
We simplify the equation to the form, which is simple to understand
15x-30=15x+30
We move all terms containing x to the left and all other terms to the right.
+15x-15x=+30+30
We simplify left and right side of the equation.
0x=+60
0=60
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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