3a+7a+9=

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


Simplifying
3a + 7a + 9 = 0

Reorder the terms:
9 + 3a + 7a = 0

Combine like terms: 3a + 7a = 10a
9 + 10a = 0

Solving
9 + 10a = 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 + 10a = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 10a = 0 + -9
10a = 0 + -9

Combine like terms: 0 + -9 = -9
10a = -9

Divide each side by '10'.
a = -0.9

Simplifying
a = -0.9

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