40-5y=20

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Solution for 40-5y=20 equation: 


Simplifying
40 + -5y = 20

Solving
40 + -5y = 20

Solving for variable 'y'.

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

Add '-40' to each side of the equation.
40 + -40 + -5y = 20 + -40

Combine like terms: 40 + -40 = 0
0 + -5y = 20 + -40
-5y = 20 + -40

Combine like terms: 20 + -40 = -20
-5y = -20

Divide each side by '-5'.
y = 4

Simplifying
y = 4

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