-20=y+40

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Solution for -20=y+40 equation:


Simplifying
-20 = y + 40

Reorder the terms:
-20 = 40 + y

Solving
-20 = 40 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-20 + -1y = 40 + y + -1y

Combine like terms: y + -1y = 0
-20 + -1y = 40 + 0
-20 + -1y = 40

Add '20' to each side of the equation.
-20 + 20 + -1y = 40 + 20

Combine like terms: -20 + 20 = 0
0 + -1y = 40 + 20
-1y = 40 + 20

Combine like terms: 40 + 20 = 60
-1y = 60

Divide each side by '-1'.
y = -60

Simplifying
y = -60

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