a*2+3a-1=0

Solution for a*2+3a-1=0 equation:

Simplifying
a * 2 + 3a + -1 = 0

Reorder the terms for easier multiplication:
2a + 3a + -1 = 0

Reorder the terms:
-1 + 2a + 3a = 0

Combine like terms: 2a + 3a = 5a
-1 + 5a = 0

Solving
-1 + 5a = 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 + 5a = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 5a = 0 + 1
5a = 0 + 1

Combine like terms: 0 + 1 = 1
5a = 1

Divide each side by '5'.
a = 0.2

Simplifying
a = 0.2