2-9=-7u+7

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


Simplifying
2 + -9 = -7u + 7

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

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

Solving
-7 = 7 + -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.
-7 + 7u = 7 + -7u + 7u

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

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

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

Combine like terms: 7 + 7 = 14
7u = 14

Divide each side by '7'.
u = 2

Simplifying
u = 2

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