-3+y+9=4y+15

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Solution for -3+y+9=4y+15 equation:


Simplifying
-3 + y + 9 = 4y + 15

Reorder the terms:
-3 + 9 + y = 4y + 15

Combine like terms: -3 + 9 = 6
6 + y = 4y + 15

Reorder the terms:
6 + y = 15 + 4y

Solving
6 + y = 15 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
6 + y + -4y = 15 + 4y + -4y

Combine like terms: y + -4y = -3y
6 + -3y = 15 + 4y + -4y

Combine like terms: 4y + -4y = 0
6 + -3y = 15 + 0
6 + -3y = 15

Add '-6' to each side of the equation.
6 + -6 + -3y = 15 + -6

Combine like terms: 6 + -6 = 0
0 + -3y = 15 + -6
-3y = 15 + -6

Combine like terms: 15 + -6 = 9
-3y = 9

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

Simplifying
y = -3

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