-8(u+9)=5u-20

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Solution for -8(u+9)=5u-20 equation:


Simplifying
-8(u + 9) = 5u + -20

Reorder the terms:
-8(9 + u) = 5u + -20
(9 * -8 + u * -8) = 5u + -20
(-72 + -8u) = 5u + -20

Reorder the terms:
-72 + -8u = -20 + 5u

Solving
-72 + -8u = -20 + 5u

Solving for variable 'u'.

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

Add '-5u' to each side of the equation.
-72 + -8u + -5u = -20 + 5u + -5u

Combine like terms: -8u + -5u = -13u
-72 + -13u = -20 + 5u + -5u

Combine like terms: 5u + -5u = 0
-72 + -13u = -20 + 0
-72 + -13u = -20

Add '72' to each side of the equation.
-72 + 72 + -13u = -20 + 72

Combine like terms: -72 + 72 = 0
0 + -13u = -20 + 72
-13u = -20 + 72

Combine like terms: -20 + 72 = 52
-13u = 52

Divide each side by '-13'.
u = -4

Simplifying
u = -4

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