2.3=a-(-2.7)

Solution for 2.3=a-(-2.7) equation:

Simplifying
2.3 = a + -1(-2.7)

Multiply -1 * -2.7
2.3 = a + 2.7

Reorder the terms:
2.3 = 2.7 + a

Solving
2.3 = 2.7 + 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.
2.3 + -1a = 2.7 + a + -1a

Combine like terms: a + -1a = 0
2.3 + -1a = 2.7 + 0
2.3 + -1a = 2.7

Add '-2.3' to each side of the equation.
2.3 + -2.3 + -1a = 2.7 + -2.3

Combine like terms: 2.3 + -2.3 = 0.0
0.0 + -1a = 2.7 + -2.3
-1a = 2.7 + -2.3

Combine like terms: 2.7 + -2.3 = 0.4
-1a = 0.4

Divide each side by '-1'.
a = -0.4

Simplifying
a = -0.4