3+2y=45

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Solution for 3+2y=45 equation: 


Simplifying
3 + 2y = 45

Solving
3 + 2y = 45

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 2y = 45 + -3

Combine like terms: 3 + -3 = 0
0 + 2y = 45 + -3
2y = 45 + -3

Combine like terms: 45 + -3 = 42
2y = 42

Divide each side by '2'.
y = 21

Simplifying
y = 21

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