-5-8u=-7u+21

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Solution for -5-8u=-7u+21 equation:


Simplifying
-5 + -8u = -7u + 21

Reorder the terms:
-5 + -8u = 21 + -7u

Solving
-5 + -8u = 21 + -7u

Solving for variable 'u'.

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

Add '7u' to each side of the equation.
-5 + -8u + 7u = 21 + -7u + 7u

Combine like terms: -8u + 7u = -1u
-5 + -1u = 21 + -7u + 7u

Combine like terms: -7u + 7u = 0
-5 + -1u = 21 + 0
-5 + -1u = 21

Add '5' to each side of the equation.
-5 + 5 + -1u = 21 + 5

Combine like terms: -5 + 5 = 0
0 + -1u = 21 + 5
-1u = 21 + 5

Combine like terms: 21 + 5 = 26
-1u = 26

Divide each side by '-1'.
u = -26

Simplifying
u = -26

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