y+a=-21

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Solution for y+a=-21 equation:


Simplifying
y + a = -21

Reorder the terms:
a + y = -21

Solving
a + y = -21

Solving for variable 'a'.

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

Add '-1y' to each side of the equation.
a + y + -1y = -21 + -1y

Combine like terms: y + -1y = 0
a + 0 = -21 + -1y
a = -21 + -1y

Simplifying
a = -21 + -1y

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