3=5(u+3)-8u

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Solution for 3=5(u+3)-8u equation:


Simplifying
3 = 5(u + 3) + -8u

Reorder the terms:
3 = 5(3 + u) + -8u
3 = (3 * 5 + u * 5) + -8u
3 = (15 + 5u) + -8u

Combine like terms: 5u + -8u = -3u
3 = 15 + -3u

Solving
3 = 15 + -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.
3 + 3u = 15 + -3u + 3u

Combine like terms: -3u + 3u = 0
3 + 3u = 15 + 0
3 + 3u = 15

Add '-3' to each side of the equation.
3 + -3 + 3u = 15 + -3

Combine like terms: 3 + -3 = 0
0 + 3u = 15 + -3
3u = 15 + -3

Combine like terms: 15 + -3 = 12
3u = 12

Divide each side by '3'.
u = 4

Simplifying
u = 4

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