2a+7a+1=

Solution for 2a+7a+1= equation:

Simplifying
2a + 7a + 1 = 0

Reorder the terms:
1 + 2a + 7a = 0

Combine like terms: 2a + 7a = 9a
1 + 9a = 0

Solving
1 + 9a = 0

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 9a = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 9a = 0 + -1
9a = 0 + -1

Combine like terms: 0 + -1 = -1
9a = -1

Divide each side by '9'.
a = -0.1111111111

Simplifying
a = -0.1111111111