25.9+(-4.3)=a

Solution for 25.9+(-4.3)=a equation:

Simplifying
25.9 + (-4.3) = a
25.9 + -4.3 = a

Combine like terms: 25.9 + -4.3 = 21.6
21.6 = a

Solving
21.6 = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
21.6 + -1a = a + -1a

Combine like terms: a + -1a = 0
21.6 + -1a = 0

Add '-21.6' to each side of the equation.
21.6 + -21.6 + -1a = 0 + -21.6

Combine like terms: 21.6 + -21.6 = 0.0
0.0 + -1a = 0 + -21.6
-1a = 0 + -21.6

Combine like terms: 0 + -21.6 = -21.6
-1a = -21.6

Divide each side by '-1'.
a = 21.6

Simplifying
a = 21.6