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2/5=-3/7+v
We simplify the equation to the form, which is simple to understand
2/5=-3/7+v
Simplifying:
+ 0.4=-3/7+v
Simplifying:
+ 0.4=-0.428571428571+v
We move all terms containing v to the left and all other terms to the right.
-1v=-0.428571428571-0.4
We simplify left and right side of the equation.
-1v=-0.828571428571
We divide both sides of the equation by -01 to get v.
v=0.828571428571
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