3y+4=y+20

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Solution for 3y+4=y+20 equation: 


Simplifying
3y + 4 = y + 20

Reorder the terms:
4 + 3y = y + 20

Reorder the terms:
4 + 3y = 20 + y

Solving
4 + 3y = 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 + 3y + -1y = 20 + y + -1y

Combine like terms: 3y + -1y = 2y
4 + 2y = 20 + y + -1y

Combine like terms: y + -1y = 0
4 + 2y = 20 + 0
4 + 2y = 20

Add '-4' to each side of the equation.
4 + -4 + 2y = 20 + -4

Combine like terms: 4 + -4 = 0
0 + 2y = 20 + -4
2y = 20 + -4

Combine like terms: 20 + -4 = 16
2y = 16

Divide each side by '2'.
y = 8

Simplifying
y = 8

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