-28=5u+7(u+8)

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Solution for -28=5u+7(u+8) equation:


Simplifying
-28 = 5u + 7(u + 8)

Reorder the terms:
-28 = 5u + 7(8 + u)
-28 = 5u + (8 * 7 + u * 7)
-28 = 5u + (56 + 7u)

Reorder the terms:
-28 = 56 + 5u + 7u

Combine like terms: 5u + 7u = 12u
-28 = 56 + 12u

Solving
-28 = 56 + 12u

Solving for variable 'u'.

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

Add '-12u' to each side of the equation.
-28 + -12u = 56 + 12u + -12u

Combine like terms: 12u + -12u = 0
-28 + -12u = 56 + 0
-28 + -12u = 56

Add '28' to each side of the equation.
-28 + 28 + -12u = 56 + 28

Combine like terms: -28 + 28 = 0
0 + -12u = 56 + 28
-12u = 56 + 28

Combine like terms: 56 + 28 = 84
-12u = 84

Divide each side by '-12'.
u = -7

Simplifying
u = -7

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