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-3+7(x-3)=15x+6-8x
We simplify the equation to the form, which is simple to understand
-3+7(x-3)=15x+6-8x
Reorder the terms in parentheses
-3+(+7x-21)=15x+6-8x
Remove unnecessary parentheses
-3+7x-21=+15x+6-8x
We move all terms containing x to the left and all other terms to the right.
+7x-15x+8x=+6+3+21
We simplify left and right side of the equation.
0x=+30
0=30
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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