3u+5u+30=12

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Solution for 3u+5u+30=12 equation:


Simplifying
3u + 5u + 30 = 12

Reorder the terms:
30 + 3u + 5u = 12

Combine like terms: 3u + 5u = 8u
30 + 8u = 12

Solving
30 + 8u = 12

Solving for variable 'u'.

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

Add '-30' to each side of the equation.
30 + -30 + 8u = 12 + -30

Combine like terms: 30 + -30 = 0
0 + 8u = 12 + -30
8u = 12 + -30

Combine like terms: 12 + -30 = -18
8u = -18

Divide each side by '8'.
u = -2.25

Simplifying
u = -2.25

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