3u-45=-3(u+9)

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Solution for 3u-45=-3(u+9) equation:


Simplifying
3u + -45 = -3(u + 9)

Reorder the terms:
-45 + 3u = -3(u + 9)

Reorder the terms:
-45 + 3u = -3(9 + u)
-45 + 3u = (9 * -3 + u * -3)
-45 + 3u = (-27 + -3u)

Solving
-45 + 3u = -27 + -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.
-45 + 3u + 3u = -27 + -3u + 3u

Combine like terms: 3u + 3u = 6u
-45 + 6u = -27 + -3u + 3u

Combine like terms: -3u + 3u = 0
-45 + 6u = -27 + 0
-45 + 6u = -27

Add '45' to each side of the equation.
-45 + 45 + 6u = -27 + 45

Combine like terms: -45 + 45 = 0
0 + 6u = -27 + 45
6u = -27 + 45

Combine like terms: -27 + 45 = 18
6u = 18

Divide each side by '6'.
u = 3

Simplifying
u = 3

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