7+2u=3

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Solution for 7+2u=3 equation: 


Simplifying
7 + 2u = 3

Solving
7 + 2u = 3

Solving for variable 'u'.

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

Add '-7' to each side of the equation.
7 + -7 + 2u = 3 + -7

Combine like terms: 7 + -7 = 0
0 + 2u = 3 + -7
2u = 3 + -7

Combine like terms: 3 + -7 = -4
2u = -4

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

Simplifying
u = -2

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