Question

Afla numarul necunoscut: 9•4:a=6. 6•4:b=8 c:5•4=8. n:(3•3)=6•4. (13+o):8=7. 33-p•4=13 d•3:6=4. m:(2•4)=14:2.

Answer 1

9×4:a=6

36:a=6

a=36:6

a=6

6×4:b=8

24:b=8

b=24:8

b=3

c:5×4=8

c:5=8:4

c:5=2

c=2×5

c=10

n:(3×3)=6×4

n:9=24

n=24×9

n=216

(13+o):8=7

13+o=7×8

13+o=56

o=56-13

o=43

33-p×4=13

p×4=33-13

p×4=20

p=20:4

p=5

d×3:6=4

d×3=4×6

d×3=24

d=24:3

d=8

m:(2×4)=14:2

m:8=7

m=7×8

m=56