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(3x+4)+(x+1)=4(x-1)+7
We simplify the equation to the form, which is simple to understand
(3x+4)+(x+1)=4(x-1)+7
Remove unnecessary parentheses
3x+4+(x+1)=4*(x-1)+7
Remove unnecessary parentheses
+3x+4+x+1=+4+*(+x-1+)+7
Reorder the terms in parentheses
3x+4x+1=+(+4x-4)+7
Remove unnecessary parentheses
+3x+4+x+1=+4x-4+7
We move all terms containing x to the left and all other terms to the right.
+3x+1x-4x=-4+7-4-1
We simplify left and right side of the equation.
0x=-2
0=-2
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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