5=-7u+3(u+3)

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Solution for 5=-7u+3(u+3) equation:


Simplifying
5 = -7u + 3(u + 3)

Reorder the terms:
5 = -7u + 3(3 + u)
5 = -7u + (3 * 3 + u * 3)
5 = -7u + (9 + 3u)

Reorder the terms:
5 = 9 + -7u + 3u

Combine like terms: -7u + 3u = -4u
5 = 9 + -4u

Solving
5 = 9 + -4u

Solving for variable 'u'.

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

Add '4u' to each side of the equation.
5 + 4u = 9 + -4u + 4u

Combine like terms: -4u + 4u = 0
5 + 4u = 9 + 0
5 + 4u = 9

Add '-5' to each side of the equation.
5 + -5 + 4u = 9 + -5

Combine like terms: 5 + -5 = 0
0 + 4u = 9 + -5
4u = 9 + -5

Combine like terms: 9 + -5 = 4
4u = 4

Divide each side by '4'.
u = 1

Simplifying
u = 1

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