-4u+31=-9(u-9)

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Solution for -4u+31=-9(u-9) equation: 


Simplifying
-4u + 31 = -9(u + -9)

Reorder the terms:
31 + -4u = -9(u + -9)

Reorder the terms:
31 + -4u = -9(-9 + u)
31 + -4u = (-9 * -9 + u * -9)
31 + -4u = (81 + -9u)

Solving
31 + -4u = 81 + -9u

Solving for variable 'u'.

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

Add '9u' to each side of the equation.
31 + -4u + 9u = 81 + -9u + 9u

Combine like terms: -4u + 9u = 5u
31 + 5u = 81 + -9u + 9u

Combine like terms: -9u + 9u = 0
31 + 5u = 81 + 0
31 + 5u = 81

Add '-31' to each side of the equation.
31 + -31 + 5u = 81 + -31

Combine like terms: 31 + -31 = 0
0 + 5u = 81 + -31
5u = 81 + -31

Combine like terms: 81 + -31 = 50
5u = 50

Divide each side by '5'.
u = 10

Simplifying
u = 10

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