40=5(9v+2)-4(7v+1)

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Solution for 40=5(9v+2)-4(7v+1) equation:


Simplifying
40 = 5(9v + 2) + -4(7v + 1)

Reorder the terms:
40 = 5(2 + 9v) + -4(7v + 1)
40 = (2 * 5 + 9v * 5) + -4(7v + 1)
40 = (10 + 45v) + -4(7v + 1)

Reorder the terms:
40 = 10 + 45v + -4(1 + 7v)
40 = 10 + 45v + (1 * -4 + 7v * -4)
40 = 10 + 45v + (-4 + -28v)

Reorder the terms:
40 = 10 + -4 + 45v + -28v

Combine like terms: 10 + -4 = 6
40 = 6 + 45v + -28v

Combine like terms: 45v + -28v = 17v
40 = 6 + 17v

Solving
40 = 6 + 17v

Solving for variable 'v'.

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

Add '-17v' to each side of the equation.
40 + -17v = 6 + 17v + -17v

Combine like terms: 17v + -17v = 0
40 + -17v = 6 + 0
40 + -17v = 6

Add '-40' to each side of the equation.
40 + -40 + -17v = 6 + -40

Combine like terms: 40 + -40 = 0
0 + -17v = 6 + -40
-17v = 6 + -40

Combine like terms: 6 + -40 = -34
-17v = -34

Divide each side by '-17'.
v = 2

Simplifying
v = 2

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