Question

Реши уравнения: 40:х=10 40:х=4 20:х=20

Answer 1

1)

40 : х = 10

Х=40 : 10

Х=4

___________

40 : 4 = 10

10=10

2)

40: х= 4

Х=40:4

Х=10

________

40:10=4

4=4

3)

20: х = 20

Х=20:20

Х=1
————————
20: 1 = 20

20=20

Answer 2

$40 \div x = 10 \\ 10x = 40 \\ x = 40 \div 10 \\ x = 4 \\ \\ 20 \div x = 20 \\ 20x = 20 \\ x = 20 \div 20 \\ x = 1$
40:x=4
4x=40
x=40:4
x=10