Răspuns:
6x - 2 = 124
6x = 126 => x = 21
t + 5 × 4 = 100
t = 100 - 20 => t = 80
z - 10 : 2 = 55
z - 5 = 55 => z = 60
a : 8 × 10 = 160
a : 8 = 16 => a = 128
