3(3u-4)-(u+6)=

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Solution for 3(3u-4)-(u+6)= equation:


Simplifying
3(3u + -4) + -1(u + 6) = 0

Reorder the terms:
3(-4 + 3u) + -1(u + 6) = 0
(-4 * 3 + 3u * 3) + -1(u + 6) = 0
(-12 + 9u) + -1(u + 6) = 0

Reorder the terms:
-12 + 9u + -1(6 + u) = 0
-12 + 9u + (6 * -1 + u * -1) = 0
-12 + 9u + (-6 + -1u) = 0

Reorder the terms:
-12 + -6 + 9u + -1u = 0

Combine like terms: -12 + -6 = -18
-18 + 9u + -1u = 0

Combine like terms: 9u + -1u = 8u
-18 + 8u = 0

Solving
-18 + 8u = 0

Solving for variable 'u'.

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

Add '18' to each side of the equation.
-18 + 18 + 8u = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 8u = 0 + 18
8u = 0 + 18

Combine like terms: 0 + 18 = 18
8u = 18

Divide each side by '8'.
u = 2.25

Simplifying
u = 2.25

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