4=y-20

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Solution for 4=y-20 equation:


Simplifying
4 = y + -20

Reorder the terms:
4 = -20 + y

Solving
4 = -20 + 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.
4 + -1y = -20 + y + -1y

Combine like terms: y + -1y = 0
4 + -1y = -20 + 0
4 + -1y = -20

Add '-4' to each side of the equation.
4 + -4 + -1y = -20 + -4

Combine like terms: 4 + -4 = 0
0 + -1y = -20 + -4
-1y = -20 + -4

Combine like terms: -20 + -4 = -24
-1y = -24

Divide each side by '-1'.
y = 24

Simplifying
y = 24

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