3u-12-6=30u-20-9u

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Solution for 3u-12-6=30u-20-9u equation:


Simplifying
3u + -12 + -6 = 30u + -20 + -9u

Reorder the terms:
-12 + -6 + 3u = 30u + -20 + -9u

Combine like terms: -12 + -6 = -18
-18 + 3u = 30u + -20 + -9u

Reorder the terms:
-18 + 3u = -20 + 30u + -9u

Combine like terms: 30u + -9u = 21u
-18 + 3u = -20 + 21u

Solving
-18 + 3u = -20 + 21u

Solving for variable 'u'.

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

Add '-21u' to each side of the equation.
-18 + 3u + -21u = -20 + 21u + -21u

Combine like terms: 3u + -21u = -18u
-18 + -18u = -20 + 21u + -21u

Combine like terms: 21u + -21u = 0
-18 + -18u = -20 + 0
-18 + -18u = -20

Add '18' to each side of the equation.
-18 + 18 + -18u = -20 + 18

Combine like terms: -18 + 18 = 0
0 + -18u = -20 + 18
-18u = -20 + 18

Combine like terms: -20 + 18 = -2
-18u = -2

Divide each side by '-18'.
u = 0.1111111111

Simplifying
u = 0.1111111111

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