21=-14u-18

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Solution for 21=-14u-18 equation:


Simplifying
21 = -14u + -18

Reorder the terms:
21 = -18 + -14u

Solving
21 = -18 + -14u

Solving for variable 'u'.

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

Add '14u' to each side of the equation.
21 + 14u = -18 + -14u + 14u

Combine like terms: -14u + 14u = 0
21 + 14u = -18 + 0
21 + 14u = -18

Add '-21' to each side of the equation.
21 + -21 + 14u = -18 + -21

Combine like terms: 21 + -21 = 0
0 + 14u = -18 + -21
14u = -18 + -21

Combine like terms: -18 + -21 = -39
14u = -39

Divide each side by '14'.
u = -2.785714286

Simplifying
u = -2.785714286

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