-4+5(7+2v)=81

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Solution for -4+5(7+2v)=81 equation: 


Simplifying
-4 + 5(7 + 2v) = 81
-4 + (7 * 5 + 2v * 5) = 81
-4 + (35 + 10v) = 81

Combine like terms: -4 + 35 = 31
31 + 10v = 81

Solving
31 + 10v = 81

Solving for variable 'v'.

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

Add '-31' to each side of the equation.
31 + -31 + 10v = 81 + -31

Combine like terms: 31 + -31 = 0
0 + 10v = 81 + -31
10v = 81 + -31

Combine like terms: 81 + -31 = 50
10v = 50

Divide each side by '10'.
v = 5

Simplifying
v = 5

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