4u+9=-12u

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Solution for 4u+9=-12u equation:


Simplifying
4u + 9 = -12u

Reorder the terms:
9 + 4u = -12u

Solving
9 + 4u = -12u

Solving for variable 'u'.

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

Add '12u' to each side of the equation.
9 + 4u + 12u = -12u + 12u

Combine like terms: 4u + 12u = 16u
9 + 16u = -12u + 12u

Combine like terms: -12u + 12u = 0
9 + 16u = 0

Add '-9' to each side of the equation.
9 + -9 + 16u = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 16u = 0 + -9
16u = 0 + -9

Combine like terms: 0 + -9 = -9
16u = -9

Divide each side by '16'.
u = -0.5625

Simplifying
u = -0.5625

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