15-7u-6+2u=-1

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Solution for 15-7u-6+2u=-1 equation: 


Simplifying
15 + -7u + -6 + 2u = -1

Reorder the terms:
15 + -6 + -7u + 2u = -1

Combine like terms: 15 + -6 = 9
9 + -7u + 2u = -1

Combine like terms: -7u + 2u = -5u
9 + -5u = -1

Solving
9 + -5u = -1

Solving for variable 'u'.

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

Add '-9' to each side of the equation.
9 + -9 + -5u = -1 + -9

Combine like terms: 9 + -9 = 0
0 + -5u = -1 + -9
-5u = -1 + -9

Combine like terms: -1 + -9 = -10
-5u = -10

Divide each side by '-5'.
u = 2

Simplifying
u = 2

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