8u-9=7u

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Solution for 8u-9=7u equation:


Simplifying
8u + -9 = 7u

Reorder the terms:
-9 + 8u = 7u

Solving
-9 + 8u = 7u

Solving for variable 'u'.

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

Add '-7u' to each side of the equation.
-9 + 8u + -7u = 7u + -7u

Combine like terms: 8u + -7u = 1u
-9 + 1u = 7u + -7u

Combine like terms: 7u + -7u = 0
-9 + 1u = 0

Add '9' to each side of the equation.
-9 + 9 + 1u = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 1u = 0 + 9
1u = 0 + 9

Combine like terms: 0 + 9 = 9
1u = 9

Divide each side by '1'.
u = 9

Simplifying
u = 9

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