(9u-5v+9w)-7(-9u+2v-9w)=

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Solution for (9u-5v+9w)-7(-9u+2v-9w)= equation:


Simplifying
(9u + -5v + 9w) + -7(-9u + 2v + -9w) = 0

Remove parenthesis around (9u + -5v + 9w)
9u + -5v + 9w + -7(-9u + 2v + -9w) = 0
9u + -5v + 9w + (-9u * -7 + 2v * -7 + -9w * -7) = 0
9u + -5v + 9w + (63u + -14v + 63w) = 0

Reorder the terms:
9u + 63u + -5v + -14v + 9w + 63w = 0

Combine like terms: 9u + 63u = 72u
72u + -5v + -14v + 9w + 63w = 0

Combine like terms: -5v + -14v = -19v
72u + -19v + 9w + 63w = 0

Combine like terms: 9w + 63w = 72w
72u + -19v + 72w = 0

Solving
72u + -19v + 72w = 0

Solving for variable 'u'.

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

Add '19v' to each side of the equation.
72u + -19v + 19v + 72w = 0 + 19v

Combine like terms: -19v + 19v = 0
72u + 0 + 72w = 0 + 19v
72u + 72w = 0 + 19v
Remove the zero:
72u + 72w = 19v

Add '-72w' to each side of the equation.
72u + 72w + -72w = 19v + -72w

Combine like terms: 72w + -72w = 0
72u + 0 = 19v + -72w
72u = 19v + -72w

Divide each side by '72'.
u = 0.2638888889v + -1w

Simplifying
u = 0.2638888889v + -1w

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