Y+2y-21=90

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Solution for Y+2y-21=90 equation:


Simplifying
Y + 2y + -21 = 90

Reorder the terms:
-21 + Y + 2y = 90

Solving
-21 + Y + 2y = 90

Solving for variable 'Y'.

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

Add '21' to each side of the equation.
-21 + Y + 21 + 2y = 90 + 21

Reorder the terms:
-21 + 21 + Y + 2y = 90 + 21

Combine like terms: -21 + 21 = 0
0 + Y + 2y = 90 + 21
Y + 2y = 90 + 21

Combine like terms: 90 + 21 = 111
Y + 2y = 111

Add '-2y' to each side of the equation.
Y + 2y + -2y = 111 + -2y

Combine like terms: 2y + -2y = 0
Y + 0 = 111 + -2y
Y = 111 + -2y

Simplifying
Y = 111 + -2y

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