-13=8(u-3)+3u

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Solution for -13=8(u-3)+3u equation: 


Simplifying
-13 = 8(u + -3) + 3u

Reorder the terms:
-13 = 8(-3 + u) + 3u
-13 = (-3 * 8 + u * 8) + 3u
-13 = (-24 + 8u) + 3u

Combine like terms: 8u + 3u = 11u
-13 = -24 + 11u

Solving
-13 = -24 + 11u

Solving for variable 'u'.

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

Add '-11u' to each side of the equation.
-13 + -11u = -24 + 11u + -11u

Combine like terms: 11u + -11u = 0
-13 + -11u = -24 + 0
-13 + -11u = -24

Add '13' to each side of the equation.
-13 + 13 + -11u = -24 + 13

Combine like terms: -13 + 13 = 0
0 + -11u = -24 + 13
-11u = -24 + 13

Combine like terms: -24 + 13 = -11
-11u = -11

Divide each side by '-11'.
u = 1

Simplifying
u = 1

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