7u+9=10u

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Solution for 7u+9=10u equation:


Simplifying
7u + 9 = 10u

Reorder the terms:
9 + 7u = 10u

Solving
9 + 7u = 10u

Solving for variable 'u'.

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

Add '-10u' to each side of the equation.
9 + 7u + -10u = 10u + -10u

Combine like terms: 7u + -10u = -3u
9 + -3u = 10u + -10u

Combine like terms: 10u + -10u = 0
9 + -3u = 0

Add '-9' to each side of the equation.
9 + -9 + -3u = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -3u = 0 + -9
-3u = 0 + -9

Combine like terms: 0 + -9 = -9
-3u = -9

Divide each side by '-3'.
u = 3

Simplifying
u = 3

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