-4*20-5y=20

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Solution for -4*20-5y=20 equation: 


Simplifying
-4 * 20 + -5y = 20

Multiply -4 * 20
-80 + -5y = 20

Solving
-80 + -5y = 20

Solving for variable 'y'.

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

Add '80' to each side of the equation.
-80 + 80 + -5y = 20 + 80

Combine like terms: -80 + 80 = 0
0 + -5y = 20 + 80
-5y = 20 + 80

Combine like terms: 20 + 80 = 100
-5y = 100

Divide each side by '-5'.
y = -20

Simplifying
y = -20

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