-31=5(u-8)-8u

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Solution for -31=5(u-8)-8u equation:


Simplifying
-31 = 5(u + -8) + -8u

Reorder the terms:
-31 = 5(-8 + u) + -8u
-31 = (-8 * 5 + u * 5) + -8u
-31 = (-40 + 5u) + -8u

Combine like terms: 5u + -8u = -3u
-31 = -40 + -3u

Solving
-31 = -40 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
-31 + 3u = -40 + -3u + 3u

Combine like terms: -3u + 3u = 0
-31 + 3u = -40 + 0
-31 + 3u = -40

Add '31' to each side of the equation.
-31 + 31 + 3u = -40 + 31

Combine like terms: -31 + 31 = 0
0 + 3u = -40 + 31
3u = -40 + 31

Combine like terms: -40 + 31 = -9
3u = -9

Divide each side by '3'.
u = -3

Simplifying
u = -3

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