3v+9-8v=31

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Solution for 3v+9-8v=31 equation:


Simplifying
3v + 9 + -8v = 31

Reorder the terms:
9 + 3v + -8v = 31

Combine like terms: 3v + -8v = -5v
9 + -5v = 31

Solving
9 + -5v = 31

Solving for variable 'v'.

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

Add '-9' to each side of the equation.
9 + -9 + -5v = 31 + -9

Combine like terms: 9 + -9 = 0
0 + -5v = 31 + -9
-5v = 31 + -9

Combine like terms: 31 + -9 = 22
-5v = 22

Divide each side by '-5'.
v = -4.4

Simplifying
v = -4.4

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