Question

15 Află numerele necunoscute.
a) 62 + x = 71
y+19=43
b)x+2=10
4+y=36
c)40-x=19
y-40=60
d)x:4=4
24:y=3​

Answer 1

Răspuns:

a)x=71-62=9

y=43+19=62

b)

x=10+2=12

y=36-4=32

c)

x=40-19=21

y=4×4=16

y=24:3=8

Answer 2

Răspuns:

a)

62+x=71

x=71-62

x=9

62+9=71

y+19=43

y=43-19

y=24

24+19=43

b)

x+2=10

x=10-2

x=8

8+2=10

4+y=36

y=36-4

y=32

4+32=36

c)

40-x=19

x=40-19

x=21

40-21=19

y-40=60

y=60+40

y=100

100-40=60

d)

x:4=4

x=4×4

x=16

16:4=4

24:y=3

y=24:3

y=8

24:8=3