9u+15=4(u-5)

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Solution for 9u+15=4(u-5) equation:


Simplifying
9u + 15 = 4(u + -5)

Reorder the terms:
15 + 9u = 4(u + -5)

Reorder the terms:
15 + 9u = 4(-5 + u)
15 + 9u = (-5 * 4 + u * 4)
15 + 9u = (-20 + 4u)

Solving
15 + 9u = -20 + 4u

Solving for variable 'u'.

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

Add '-4u' to each side of the equation.
15 + 9u + -4u = -20 + 4u + -4u

Combine like terms: 9u + -4u = 5u
15 + 5u = -20 + 4u + -4u

Combine like terms: 4u + -4u = 0
15 + 5u = -20 + 0
15 + 5u = -20

Add '-15' to each side of the equation.
15 + -15 + 5u = -20 + -15

Combine like terms: 15 + -15 = 0
0 + 5u = -20 + -15
5u = -20 + -15

Combine like terms: -20 + -15 = -35
5u = -35

Divide each side by '5'.
u = -7

Simplifying
u = -7

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