Как решить (4×1200)×х=9600; х ×(5600÷8)=21000;(7300-5300)×х=72000;х×(4500+1500)=30000

(4*1200)*х9600 4800*х=9600 Х=9600:4800 Х=2 ------------------------- Х*(5600:8)=21000 Х*700=21000 Х=21000:700 Х=30 ------------------------- (7300-5300)*х=72000 2000*х=72000 Х=72000÷2000 Х=36 ------------------------- Х*(4500+1500)=30000 Х*6000=30000 Х=30000÷6000 Х=5