10-y=y-20

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Solution for 10-y=y-20 equation:


Simplifying
10 + -1y = y + -20

Reorder the terms:
10 + -1y = -20 + y

Solving
10 + -1y = -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.
10 + -1y + -1y = -20 + y + -1y

Combine like terms: -1y + -1y = -2y
10 + -2y = -20 + y + -1y

Combine like terms: y + -1y = 0
10 + -2y = -20 + 0
10 + -2y = -20

Add '-10' to each side of the equation.
10 + -10 + -2y = -20 + -10

Combine like terms: 10 + -10 = 0
0 + -2y = -20 + -10
-2y = -20 + -10

Combine like terms: -20 + -10 = -30
-2y = -30

Divide each side by '-2'.
y = 15

Simplifying
y = 15

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