-7u+9=-9u+3

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


Simplifying
-7u + 9 = -9u + 3

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

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

Solving
9 + -7u = 3 + -9u

Solving for variable 'u'.

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

Add '9u' to each side of the equation.
9 + -7u + 9u = 3 + -9u + 9u

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

Combine like terms: -9u + 9u = 0
9 + 2u = 3 + 0
9 + 2u = 3

Add '-9' to each side of the equation.
9 + -9 + 2u = 3 + -9

Combine like terms: 9 + -9 = 0
0 + 2u = 3 + -9
2u = 3 + -9

Combine like terms: 3 + -9 = -6
2u = -6

Divide each side by '2'.
u = -3

Simplifying
u = -3

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