7(u+2)=9u-4

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Solution for 7(u+2)=9u-4 equation:


Simplifying
7(u + 2) = 9u + -4

Reorder the terms:
7(2 + u) = 9u + -4
(2 * 7 + u * 7) = 9u + -4
(14 + 7u) = 9u + -4

Reorder the terms:
14 + 7u = -4 + 9u

Solving
14 + 7u = -4 + 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.
14 + 7u + -9u = -4 + 9u + -9u

Combine like terms: 7u + -9u = -2u
14 + -2u = -4 + 9u + -9u

Combine like terms: 9u + -9u = 0
14 + -2u = -4 + 0
14 + -2u = -4

Add '-14' to each side of the equation.
14 + -14 + -2u = -4 + -14

Combine like terms: 14 + -14 = 0
0 + -2u = -4 + -14
-2u = -4 + -14

Combine like terms: -4 + -14 = -18
-2u = -18

Divide each side by '-2'.
u = 9

Simplifying
u = 9

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