Х*64+2176=6272. 12307-х:124=11932. 5000*(28+х)=200. 100:х+15=35
Х*64+2176=6272 64х=6272-2176 64х=4096 х=4096:64 х=64 12307-х:124=11932 х:124=12307-11932 х:124=375 х=375*124 х=46500 100:х+15=35 100:х=35-15 100:х=20 х=100:20 х=5