-18=u-(-4)

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Solution for -18=u-(-4) equation:


Simplifying
-18 = u + -1(-4)

Multiply -1 * -4
-18 = u + 4

Reorder the terms:
-18 = 4 + u

Solving
-18 = 4 + u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
-18 + -1u = 4 + u + -1u

Combine like terms: u + -1u = 0
-18 + -1u = 4 + 0
-18 + -1u = 4

Add '18' to each side of the equation.
-18 + 18 + -1u = 4 + 18

Combine like terms: -18 + 18 = 0
0 + -1u = 4 + 18
-1u = 4 + 18

Combine like terms: 4 + 18 = 22
-1u = 22

Divide each side by '-1'.
u = -22

Simplifying
u = -22

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