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120+140+85+300+80+85+140=0
We simplify the equation to the form, which is simple to understand
120+140+85+300+80+85+140=0
We move all terms containing to the left and all other terms to the right.
0=0-120-140-85-300-80-85-140
We simplify left and right side of the equation.
0=-950
0=-950
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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