X : 5 = 10 , x : 7 = 6 , 28 - x = 28 , 72 - x = 7 , x - 15 = 0 , x-48 = 7
X=50 x=42 x=0 x=65 x=15 x=55
Х=10*5 х=50 х=6*7 х=42 х=28-28 х=0 х=72-7 х=65 х=15-0 х=15 х=48+8 х=55