13=5(u+5)-8u

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Solution for 13=5(u+5)-8u equation:


Simplifying
13 = 5(u + 5) + -8u

Reorder the terms:
13 = 5(5 + u) + -8u
13 = (5 * 5 + u * 5) + -8u
13 = (25 + 5u) + -8u

Combine like terms: 5u + -8u = -3u
13 = 25 + -3u

Solving
13 = 25 + -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.
13 + 3u = 25 + -3u + 3u

Combine like terms: -3u + 3u = 0
13 + 3u = 25 + 0
13 + 3u = 25

Add '-13' to each side of the equation.
13 + -13 + 3u = 25 + -13

Combine like terms: 13 + -13 = 0
0 + 3u = 25 + -13
3u = 25 + -13

Combine like terms: 25 + -13 = 12
3u = 12

Divide each side by '3'.
u = 4

Simplifying
u = 4

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