Реши уравнения 80:x = 8
32:x = 4
x:8 = 8
x•3 = 21
x+29 = 80
x-2 = 40

80:х=8, х=80:8, х=10; 32:х=4, х=32:4, х=8; х:8=8, х=8*8, х=64; х*3=21, х=21:3, х=7; х+29=80, х=80-29, х=51; х-2=40, х=40+2, х=42