Răspuns:
(-7/12) : x = 2/3
x = - 7/12 : 2/3
x = - 7/12 × 3/2
x = - 21/24
x = - 7/8
- 7/26 × x = - 2 intregi 9/23
- 7/26 × x = - (2×23+9)/23
- 7/26 × x = - 55/23
x = - 55/23 : (-7/26)
x = - 55/23 × ( - 26/7)
x = (55×26)/(23×7)
x = 1430 / 161
x = 8 intregi 142/161