18=-7u+5(u+4)

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Solution for 18=-7u+5(u+4) equation:


Simplifying
18 = -7u + 5(u + 4)

Reorder the terms:
18 = -7u + 5(4 + u)
18 = -7u + (4 * 5 + u * 5)
18 = -7u + (20 + 5u)

Reorder the terms:
18 = 20 + -7u + 5u

Combine like terms: -7u + 5u = -2u
18 = 20 + -2u

Solving
18 = 20 + -2u

Solving for variable 'u'.

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

Add '2u' to each side of the equation.
18 + 2u = 20 + -2u + 2u

Combine like terms: -2u + 2u = 0
18 + 2u = 20 + 0
18 + 2u = 20

Add '-18' to each side of the equation.
18 + -18 + 2u = 20 + -18

Combine like terms: 18 + -18 = 0
0 + 2u = 20 + -18
2u = 20 + -18

Combine like terms: 20 + -18 = 2
2u = 2

Divide each side by '2'.
u = 1

Simplifying
u = 1

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