215=78-v

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Solution for 215=78-v equation:


Simplifying
215 = 78 + -1v

Solving
215 = 78 + -1v

Solving for variable 'v'.

Move all terms containing v to the left, all other terms to the right.

Add 'v' to each side of the equation.
215 + v = 78 + -1v + v

Combine like terms: -1v + v = 0
215 + v = 78 + 0
215 + v = 78

Add '-215' to each side of the equation.
215 + -215 + v = 78 + -215

Combine like terms: 215 + -215 = 0
0 + v = 78 + -215
v = 78 + -215

Combine like terms: 78 + -215 = -137
v = -137

Simplifying
v = -137

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