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7+x/2*10=140
We simplify the equation to the form, which is simple to understand
7+x/2*10=140
We move all terms containing x to the left and all other terms to the right.
+ 0.05x=+140-7
We simplify left and right side of the equation.
+ 0.05x=+133
We divide both sides of the equation by 0.05 to get x.
x=2660
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