-40=23-7u

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Solution for -40=23-7u equation:


Simplifying
-40 = 23 + -7u

Solving
-40 = 23 + -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.
-40 + 7u = 23 + -7u + 7u

Combine like terms: -7u + 7u = 0
-40 + 7u = 23 + 0
-40 + 7u = 23

Add '40' to each side of the equation.
-40 + 40 + 7u = 23 + 40

Combine like terms: -40 + 40 = 0
0 + 7u = 23 + 40
7u = 23 + 40

Combine like terms: 23 + 40 = 63
7u = 63

Divide each side by '7'.
u = 9

Simplifying
u = 9

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