20=5-3u

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Solution for 20=5-3u equation:


Simplifying
20 = 5 + -3u

Solving
20 = 5 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
20 + 3u = 5 + -3u + 3u

Combine like terms: -3u + 3u = 0
20 + 3u = 5 + 0
20 + 3u = 5

Add '-20' to each side of the equation.
20 + -20 + 3u = 5 + -20

Combine like terms: 20 + -20 = 0
0 + 3u = 5 + -20
3u = 5 + -20

Combine like terms: 5 + -20 = -15
3u = -15

Divide each side by '3'.
u = -5

Simplifying
u = -5

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