3u-7+2u=9

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Solution for 3u-7+2u=9 equation: 


Simplifying
3u + -7 + 2u = 9

Reorder the terms:
-7 + 3u + 2u = 9

Combine like terms: 3u + 2u = 5u
-7 + 5u = 9

Solving
-7 + 5u = 9

Solving for variable 'u'.

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

Add '7' to each side of the equation.
-7 + 7 + 5u = 9 + 7

Combine like terms: -7 + 7 = 0
0 + 5u = 9 + 7
5u = 9 + 7

Combine like terms: 9 + 7 = 16
5u = 16

Divide each side by '5'.
u = 3.2

Simplifying
u = 3.2

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