2.1a+6b+20=0

Solution for 2.1a+6b+20=0 equation:

Simplifying
2.1a + 6b + 20 = 0

Reorder the terms:
20 + 2.1a + 6b = 0

Solving
20 + 2.1a + 6b = 0

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + 2.1a + -20 + 6b = 0 + -20

Reorder the terms:
20 + -20 + 2.1a + 6b = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 2.1a + 6b = 0 + -20
2.1a + 6b = 0 + -20

Combine like terms: 0 + -20 = -20
2.1a + 6b = -20

Add '-6b' to each side of the equation.
2.1a + 6b + -6b = -20 + -6b

Combine like terms: 6b + -6b = 0
2.1a + 0 = -20 + -6b
2.1a = -20 + -6b

Divide each side by '2.1'.
a = -9.523809524 + -2.857142857b

Simplifying
a = -9.523809524 + -2.857142857b