3u-9+9u+4=-6u-18

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Solution for 3u-9+9u+4=-6u-18 equation:


Simplifying
3u + -9 + 9u + 4 = -6u + -18

Reorder the terms:
-9 + 4 + 3u + 9u = -6u + -18

Combine like terms: -9 + 4 = -5
-5 + 3u + 9u = -6u + -18

Combine like terms: 3u + 9u = 12u
-5 + 12u = -6u + -18

Reorder the terms:
-5 + 12u = -18 + -6u

Solving
-5 + 12u = -18 + -6u

Solving for variable 'u'.

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

Add '6u' to each side of the equation.
-5 + 12u + 6u = -18 + -6u + 6u

Combine like terms: 12u + 6u = 18u
-5 + 18u = -18 + -6u + 6u

Combine like terms: -6u + 6u = 0
-5 + 18u = -18 + 0
-5 + 18u = -18

Add '5' to each side of the equation.
-5 + 5 + 18u = -18 + 5

Combine like terms: -5 + 5 = 0
0 + 18u = -18 + 5
18u = -18 + 5

Combine like terms: -18 + 5 = -13
18u = -13

Divide each side by '18'.
u = -0.7222222222

Simplifying
u = -0.7222222222

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