9-2u=15-4u

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Solution for 9-2u=15-4u equation:


Simplifying
9 + -2u = 15 + -4u

Solving
9 + -2u = 15 + -4u

Solving for variable 'u'.

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

Add '4u' to each side of the equation.
9 + -2u + 4u = 15 + -4u + 4u

Combine like terms: -2u + 4u = 2u
9 + 2u = 15 + -4u + 4u

Combine like terms: -4u + 4u = 0
9 + 2u = 15 + 0
9 + 2u = 15

Add '-9' to each side of the equation.
9 + -9 + 2u = 15 + -9

Combine like terms: 9 + -9 = 0
0 + 2u = 15 + -9
2u = 15 + -9

Combine like terms: 15 + -9 = 6
2u = 6

Divide each side by '2'.
u = 3

Simplifying
u = 3

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