9(3+u)=4(3+u)

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Solution for 9(3+u)=4(3+u) equation: 


Simplifying
9(3 + u) = 4(3 + u)
(3 * 9 + u * 9) = 4(3 + u)
(27 + 9u) = 4(3 + u)
27 + 9u = (3 * 4 + u * 4)
27 + 9u = (12 + 4u)

Solving
27 + 9u = 12 + 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.
27 + 9u + -4u = 12 + 4u + -4u

Combine like terms: 9u + -4u = 5u
27 + 5u = 12 + 4u + -4u

Combine like terms: 4u + -4u = 0
27 + 5u = 12 + 0
27 + 5u = 12

Add '-27' to each side of the equation.
27 + -27 + 5u = 12 + -27

Combine like terms: 27 + -27 = 0
0 + 5u = 12 + -27
5u = 12 + -27

Combine like terms: 12 + -27 = -15
5u = -15

Divide each side by '5'.
u = -3

Simplifying
u = -3

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