13=-8u+3(u-4)

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Solution for 13=-8u+3(u-4) equation:


Simplifying
13 = -8u + 3(u + -4)

Reorder the terms:
13 = -8u + 3(-4 + u)
13 = -8u + (-4 * 3 + u * 3)
13 = -8u + (-12 + 3u)

Reorder the terms:
13 = -12 + -8u + 3u

Combine like terms: -8u + 3u = -5u
13 = -12 + -5u

Solving
13 = -12 + -5u

Solving for variable 'u'.

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

Add '5u' to each side of the equation.
13 + 5u = -12 + -5u + 5u

Combine like terms: -5u + 5u = 0
13 + 5u = -12 + 0
13 + 5u = -12

Add '-13' to each side of the equation.
13 + -13 + 5u = -12 + -13

Combine like terms: 13 + -13 = 0
0 + 5u = -12 + -13
5u = -12 + -13

Combine like terms: -12 + -13 = -25
5u = -25

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

Simplifying
u = -5

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