1+3u=7

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Solution for 1+3u=7 equation: 


Simplifying
1 + 3u = 7

Solving
1 + 3u = 7

Solving for variable 'u'.

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

Add '-1' to each side of the equation.
1 + -1 + 3u = 7 + -1

Combine like terms: 1 + -1 = 0
0 + 3u = 7 + -1
3u = 7 + -1

Combine like terms: 7 + -1 = 6
3u = 6

Divide each side by '3'.
u = 2

Simplifying
u = 2

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