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7x-(5x-3)=2x+7
We simplify the equation to the form, which is simple to understand
7x-(5x-3)=2x+7
Remove unnecessary parentheses
7x-5x+3=2x+7
We move all terms containing x to the left and all other terms to the right.
+7x-5x-2x=+7-3
We simplify left and right side of the equation.
0x=+4
0=4
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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