3p+9a=21

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Solution for 3p+9a=21 equation: 


Simplifying
3p + 9a = 21

Reorder the terms:
9a + 3p = 21

Solving
9a + 3p = 21

Solving for variable 'a'.

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

Add '-3p' to each side of the equation.
9a + 3p + -3p = 21 + -3p

Combine like terms: 3p + -3p = 0
9a + 0 = 21 + -3p
9a = 21 + -3p

Divide each side by '9'.
a = 2.333333333 + -0.3333333333p

Simplifying
a = 2.333333333 + -0.3333333333p

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