5.2=a-(0.4)

Solution for 5.2=a-(0.4) equation:

Simplifying
5.2 = a + -1(0.4)

Multiply -1 * 0.4
5.2 = a + -0.4

Reorder the terms:
5.2 = -0.4 + a

Solving
5.2 = -0.4 + 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.
5.2 + -1a = -0.4 + a + -1a

Combine like terms: a + -1a = 0
5.2 + -1a = -0.4 + 0
5.2 + -1a = -0.4

Add '-5.2' to each side of the equation.
5.2 + -5.2 + -1a = -0.4 + -5.2

Combine like terms: 5.2 + -5.2 = 0.0
0.0 + -1a = -0.4 + -5.2
-1a = -0.4 + -5.2

Combine like terms: -0.4 + -5.2 = -5.6
-1a = -5.6

Divide each side by '-1'.
a = 5.6

Simplifying
a = 5.6