3a+9+4a=

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Solution for 3a+9+4a= equation:


Simplifying
3a + 9 + 4a = 0

Reorder the terms:
9 + 3a + 4a = 0

Combine like terms: 3a + 4a = 7a
9 + 7a = 0

Solving
9 + 7a = 0

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + 7a = 0 + -9

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

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

Divide each side by '7'.
a = -1.285714286

Simplifying
a = -1.285714286

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