42-2=3y

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Solution for 42-2=3y equation:


Simplifying
42 + -2 = 3y

Combine like terms: 42 + -2 = 40
40 = 3y

Solving
40 = 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
40 + -3y = 3y + -3y

Combine like terms: 3y + -3y = 0
40 + -3y = 0

Add '-40' to each side of the equation.
40 + -40 + -3y = 0 + -40

Combine like terms: 40 + -40 = 0
0 + -3y = 0 + -40
-3y = 0 + -40

Combine like terms: 0 + -40 = -40
-3y = -40

Divide each side by '-3'.
y = 13.33333333

Simplifying
y = 13.33333333

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