Y+2y-15=21

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Solution for Y+2y-15=21 equation:


Simplifying
Y + 2y + -15 = 21

Reorder the terms:
-15 + Y + 2y = 21

Solving
-15 + Y + 2y = 21

Solving for variable 'Y'.

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

Add '15' to each side of the equation.
-15 + Y + 15 + 2y = 21 + 15

Reorder the terms:
-15 + 15 + Y + 2y = 21 + 15

Combine like terms: -15 + 15 = 0
0 + Y + 2y = 21 + 15
Y + 2y = 21 + 15

Combine like terms: 21 + 15 = 36
Y + 2y = 36

Add '-2y' to each side of the equation.
Y + 2y + -2y = 36 + -2y

Combine like terms: 2y + -2y = 0
Y + 0 = 36 + -2y
Y = 36 + -2y

Simplifying
Y = 36 + -2y

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