-4.3-(-1.8-x)=3

Solution for -4.3-(-1.8-x)=3 equation:

Simplifying
-4.3 + -1(-1.8 + -1x) = 3
-4.3 + (-1.8 * -1 + -1x * -1) = 3
-4.3 + (1.8 + 1x) = 3

Combine like terms: -4.3 + 1.8 = -2.5
-2.5 + 1x = 3

Solving
-2.5 + 1x = 3

Solving for variable 'x'.

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

Add '2.5' to each side of the equation.
-2.5 + 2.5 + 1x = 3 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 1x = 3 + 2.5
1x = 3 + 2.5

Combine like terms: 3 + 2.5 = 5.5
1x = 5.5

Divide each side by '1'.
x = 5.5

Simplifying
x = 5.5