Question

Află numarul necunoscut. a)m×4=36 8×a=72 42÷d=7 b)n÷9=7 54÷b=6 6×e=18 c)72÷p=8 c÷7=8 f÷8=9​

Answer 1

Explicație pas cu pas:

a)m×4=36

m=36:4

m=9

v:9×4=36

8×a=72

a=72:8

a=9

v:8×9=72

42:d=7

d=42:7

d=6

v:42:6=7

b)n:9=7

n=7×9

n=63

v:63:9=7

54:b=6

b=54:6

b=9

v:54:9=6

6×e=18

e=18:6

e=3

v:6×3=18

c)72:p=8

p=72:8

p=9

v:72:9=8

c:7=8

c=8×7

c=56

v:56:7=8

f:8=9

f=9×8

f=72

v:72:8=9