5(u+1)=9u+21

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Solution for 5(u+1)=9u+21 equation:


Simplifying
5(u + 1) = 9u + 21

Reorder the terms:
5(1 + u) = 9u + 21
(1 * 5 + u * 5) = 9u + 21
(5 + 5u) = 9u + 21

Reorder the terms:
5 + 5u = 21 + 9u

Solving
5 + 5u = 21 + 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.
5 + 5u + -9u = 21 + 9u + -9u

Combine like terms: 5u + -9u = -4u
5 + -4u = 21 + 9u + -9u

Combine like terms: 9u + -9u = 0
5 + -4u = 21 + 0
5 + -4u = 21

Add '-5' to each side of the equation.
5 + -5 + -4u = 21 + -5

Combine like terms: 5 + -5 = 0
0 + -4u = 21 + -5
-4u = 21 + -5

Combine like terms: 21 + -5 = 16
-4u = 16

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

Simplifying
u = -4

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