y+3-4y=15

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Solution for y+3-4y=15 equation: 


Simplifying
y + 3 + -4y = 15

Reorder the terms:
3 + y + -4y = 15

Combine like terms: y + -4y = -3y
3 + -3y = 15

Solving
3 + -3y = 15

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + -3y = 15 + -3

Combine like terms: 3 + -3 = 0
0 + -3y = 15 + -3
-3y = 15 + -3

Combine like terms: 15 + -3 = 12
-3y = 12

Divide each side by '-3'.
y = -4

Simplifying
y = -4

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