12=3.1a-59.3

Solution for 12=3.1a-59.3 equation:

Simplifying
12 = 3.1a + -59.3

Reorder the terms:
12 = -59.3 + 3.1a

Solving
12 = -59.3 + 3.1a

Solving for variable 'a'.

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

Add '-3.1a' to each side of the equation.
12 + -3.1a = -59.3 + 3.1a + -3.1a

Combine like terms: 3.1a + -3.1a = 0.0
12 + -3.1a = -59.3 + 0.0
12 + -3.1a = -59.3

Add '-12' to each side of the equation.
12 + -12 + -3.1a = -59.3 + -12

Combine like terms: 12 + -12 = 0
0 + -3.1a = -59.3 + -12
-3.1a = -59.3 + -12

Combine like terms: -59.3 + -12 = -71.3
-3.1a = -71.3

Divide each side by '-3.1'.
a = 23

Simplifying
a = 23