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

Question

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

Answer 1

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