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Simplifying
81 = 3v2 + 9
Reorder the terms:
81 = 9 + 3v2
Solving
81 = 9 + 3v2
Solving for variable 'v'.
Move all terms containing v to the left, all other terms to the right.
Add '-3v2' to each side of the equation.
81 + -3v2 = 9 + 3v2 + -3v2
Combine like terms: 3v2 + -3v2 = 0
81 + -3v2 = 9 + 0
81 + -3v2 = 9
Add '-81' to each side of the equation.
81 + -81 + -3v2 = 9 + -81
Combine like terms: 81 + -81 = 0
0 + -3v2 = 9 + -81
-3v2 = 9 + -81
Combine like terms: 9 + -81 = -72
-3v2 = -72
Divide each side by '-3'.
v2 = 24
Simplifying
v2 = 24
Take the square root of each side:
v = {-4.898979486, 4.898979486}
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