Сделай проверку в уравнениях и реши их 800:х-300=500 (х+200):400=2 2*(300+х)600

800:х-300=500800:х=500+300800:х=800х=800:800х=1------------------------800:1-300=500500=500(х+200):400=2х+200=2×400х+200=800х=800-200х=600------------------(600+200):400=22=22×(300+х)=600300+х=600:2300+х=300х=300-300х=0---------------------2×(300+0)=600600=600Проверка500+300:800=12×400-200=600600:2-300=0