Let's solve this step by step:

Find the division of (-0.8 + 2.32) by (-0.4):
=(-0.8 + 2.32) / (-0.4)
= 1.52 / (-0.4)
= -3.8

Substitute the result back into the original equation:
-3.8 = 3x - 7.9

Solve for x:
3x = -3.8 + 7.9
3x = 4.1
x = 4.1 / 3
x = 1.36666666667

Therefore, the solution to the equation is x = 1.37 (rounded to two decimal places).