90050-х=4806 х-534=30967
х=90050-4806 х=30967+534
х=85244 х=31501
х*300=1500 2700/х=9
х=1500/300 х=2700/9
х=5 х=300
х/80=800
х=800*80
х=64000
90050-х=4806 х-534=30967
х=90050-4806 х=30967+534
х=85244 х=31501
х*300=1500 2700/х=9
х=1500/300 х=2700/9
х=5 х=300
х/80=800
х=800*80
х=64000