9-4u=-10+3u-9

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Solution for 9-4u=-10+3u-9 equation:


Simplifying
9 + -4u = -10 + 3u + -9

Reorder the terms:
9 + -4u = -10 + -9 + 3u

Combine like terms: -10 + -9 = -19
9 + -4u = -19 + 3u

Solving
9 + -4u = -19 + 3u

Solving for variable 'u'.

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

Add '-3u' to each side of the equation.
9 + -4u + -3u = -19 + 3u + -3u

Combine like terms: -4u + -3u = -7u
9 + -7u = -19 + 3u + -3u

Combine like terms: 3u + -3u = 0
9 + -7u = -19 + 0
9 + -7u = -19

Add '-9' to each side of the equation.
9 + -9 + -7u = -19 + -9

Combine like terms: 9 + -9 = 0
0 + -7u = -19 + -9
-7u = -19 + -9

Combine like terms: -19 + -9 = -28
-7u = -28

Divide each side by '-7'.
u = 4

Simplifying
u = 4

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