Question

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Answer 1

Răspuns:

99099÷×=99

×=990099÷99

×=1001

b) (342÷×-6)÷2=1

(342÷×-6)=1+5

342÷×-6=6×2

342÷×=12+6

×=342÷18

×=19

c)129+47334÷×=2187

47334÷×=2187-128

×=47334÷2058

×=23

d)312÷(×+6)=26

×+6=312÷26

×+6=12

×=12-6

×=6

e)73×15+40032÷×=1512

1095+40032÷×=1512

40032÷×=1512-1095

×=40032÷417

×=96

f)1490-1490÷×=745

1490÷×=1490-745

×=1490÷745

×=2

g)(102÷×-47÷×)÷5=11

102÷×-47÷×=11×5

55÷×=55

×=55÷55=1

h) (49÷×+51÷×)÷5=4

49÷×+51÷×=4×5

100÷×=20

×=100÷20

×=5

i)(288÷×-8)÷4-5=1

(288÷×-8)÷4=1+5

288÷×-8=6×4

288÷×=288÷16

×=288÷16

×=18

j) [(25÷×+20÷×)÷3]+5=8

(25÷×+20÷×)÷3=8-5

25÷×+20÷×=3×3

45÷×=9

×=45÷8

×=5