7n+a=3-9n

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Solution for 7n+a=3-9n equation: 


Simplifying
7n + a = 3 + -9n

Reorder the terms:
a + 7n = 3 + -9n

Solving
a + 7n = 3 + -9n

Solving for variable 'a'.

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

Add '-7n' to each side of the equation.
a + 7n + -7n = 3 + -9n + -7n

Combine like terms: 7n + -7n = 0
a + 0 = 3 + -9n + -7n
a = 3 + -9n + -7n

Combine like terms: -9n + -7n = -16n
a = 3 + -16n

Simplifying
a = 3 + -16n

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