76÷x=3 х=76-3х=73x×7=84;х=847х=12x÷3=24х=24+3х=27
76:x=3x=76:3x=25(ост. 1)76:25(ост. 1)=3 3=3x•7=84x=84:7x=1212•7=84 84=84x:3=24x=24•3x=7272:3=24 24=24