6u-(-3u)+4+15=

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Solution for 6u-(-3u)+4+15= equation:


Simplifying
6u + -1(-3u) + 4 + 15 = 0

Remove parenthesis around (-3u)
6u + -1 * -3u + 4 + 15 = 0

Multiply -1 * -3
6u + 3u + 4 + 15 = 0

Reorder the terms:
4 + 15 + 6u + 3u = 0

Combine like terms: 4 + 15 = 19
19 + 6u + 3u = 0

Combine like terms: 6u + 3u = 9u
19 + 9u = 0

Solving
19 + 9u = 0

Solving for variable 'u'.

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

Add '-19' to each side of the equation.
19 + -19 + 9u = 0 + -19

Combine like terms: 19 + -19 = 0
0 + 9u = 0 + -19
9u = 0 + -19

Combine like terms: 0 + -19 = -19
9u = -19

Divide each side by '9'.
u = -2.111111111

Simplifying
u = -2.111111111

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