1) 4 = 6/х - 2 и 6/х = 4+2 = 6
х = 6/6 = 1 - ОТВЕТ
2) 4 = (1+х)/(х-3) и 4х - 12 = 1+х и 3*х = 13
х = 13:3 = 4 1/3 - ОТВЕТ
3) 4 = 3/х + 3 и 3/х = 4 - 3 = 1
х = 3 - ОТВЕТ
4) 4 = х/(х-2) +5 и х/(х-2) = 4-5 = - 1 и х = - (х-2) = - х + 2 и 2х = 2
х = 2:2 = 1 - ОТВЕТ