3u+6u-19=-91

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Solution for 3u+6u-19=-91 equation:


Simplifying
3u + 6u + -19 = -91

Reorder the terms:
-19 + 3u + 6u = -91

Combine like terms: 3u + 6u = 9u
-19 + 9u = -91

Solving
-19 + 9u = -91

Solving for variable 'u'.

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

Add '19' to each side of the equation.
-19 + 19 + 9u = -91 + 19

Combine like terms: -19 + 19 = 0
0 + 9u = -91 + 19
9u = -91 + 19

Combine like terms: -91 + 19 = -72
9u = -72

Divide each side by '9'.
u = -8

Simplifying
u = -8

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