20=-7u+5(u+6)

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Solution for 20=-7u+5(u+6) equation:


Simplifying
20 = -7u + 5(u + 6)

Reorder the terms:
20 = -7u + 5(6 + u)
20 = -7u + (6 * 5 + u * 5)
20 = -7u + (30 + 5u)

Reorder the terms:
20 = 30 + -7u + 5u

Combine like terms: -7u + 5u = -2u
20 = 30 + -2u

Solving
20 = 30 + -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.
20 + 2u = 30 + -2u + 2u

Combine like terms: -2u + 2u = 0
20 + 2u = 30 + 0
20 + 2u = 30

Add '-20' to each side of the equation.
20 + -20 + 2u = 30 + -20

Combine like terms: 20 + -20 = 0
0 + 2u = 30 + -20
2u = 30 + -20

Combine like terms: 30 + -20 = 10
2u = 10

Divide each side by '2'.
u = 5

Simplifying
u = 5

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