864:(7х+3)=367х+3=864:367х+3=247х=24-37х=21х=21:7х=3Проверка:864:(7*3+3)=36864:(21+3)=36864:24=3636=361431:(363-8х)=53363-8х=1431:53363-8х=278х=363-278х=336х=336:8х=42Проверка:1431:(363-8*42)=531431:(363-336)=531431:27=5353=533168:(1032-19х)=721032-19х=3168:721032-19х=4419х=1032-4419х=988х=988:19х=52Проверка:3168:(1032-19*52)=723168:(1032-988)=723168:44=7272=7213(х+22)-97=29313(х+22)=293+9713(х+22)=390х+22=390:13х+22=30х=30-22х=8Проверка:13(8+22)-97=29313*30-97=293390-97=293293=29325(х-46)-24=20125(х-46)=201+2425(х-46)=225х-46=225:25х-46=9х=9+46х=55Проверка:25(55-46)-24=20125*9-24=201225-24=201201=201