0,75x+4/9=-4/9
0,75x = -4/9-4/9
0,75x = -4/9+(-4/9)
0,75x =-8/9
x = -8/9:0,75
x =-8/9:75/100
x = -8/9:3/4
x = -8/9.4/3
x = -32/27
0,75x = -4/9 + 4/9
0,75x = 0
x = 0 : 0,75
x = 0
0,75x + \(\dfrac{4}{9}\) = -\(\dfrac{4}{9}\)
0,75x = -\(\dfrac{4}{9}\) - \(\dfrac{4}{9}\)
0,75x = -\(\dfrac{8}{9}\)
x = -\(\dfrac{8}{9}\):0,75
x = -0,84375