20=y-7

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Solution for 20=y-7 equation:


Simplifying
20 = y + -7

Reorder the terms:
20 = -7 + y

Solving
20 = -7 + 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 = -7 + y + -1y

Combine like terms: y + -1y = 0
20 + -1y = -7 + 0
20 + -1y = -7

Add '-20' to each side of the equation.
20 + -20 + -1y = -7 + -20

Combine like terms: 20 + -20 = 0
0 + -1y = -7 + -20
-1y = -7 + -20

Combine like terms: -7 + -20 = -27
-1y = -27

Divide each side by '-1'.
y = 27

Simplifying
y = 27

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