-3(u+7)=8u+23

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Solution for -3(u+7)=8u+23 equation:


Simplifying
-3(u + 7) = 8u + 23

Reorder the terms:
-3(7 + u) = 8u + 23
(7 * -3 + u * -3) = 8u + 23
(-21 + -3u) = 8u + 23

Reorder the terms:
-21 + -3u = 23 + 8u

Solving
-21 + -3u = 23 + 8u

Solving for variable 'u'.

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

Add '-8u' to each side of the equation.
-21 + -3u + -8u = 23 + 8u + -8u

Combine like terms: -3u + -8u = -11u
-21 + -11u = 23 + 8u + -8u

Combine like terms: 8u + -8u = 0
-21 + -11u = 23 + 0
-21 + -11u = 23

Add '21' to each side of the equation.
-21 + 21 + -11u = 23 + 21

Combine like terms: -21 + 21 = 0
0 + -11u = 23 + 21
-11u = 23 + 21

Combine like terms: 23 + 21 = 44
-11u = 44

Divide each side by '-11'.
u = -4

Simplifying
u = -4

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