Question

36-42:e:(15:3-4:1)-20=10

Answer 1

Răspuns:

36-42:e:(5-4)-20=10

36-42:e:1-20=10

36-42:e:1=20+10

36-42:e:1=30

42:e:1=36-30

42:e:1=6

e:1=42:6

e:1=7

e=7×1

e=7

Answer 2

Răspuns:

36-42:e:(15:3-4:1)-20=10/+20

36-42:e:(15:3-4:1)=30+42

36:e:(15:3-4:1)=72:36

e:15:3-4:1=2/×1

e:15:3-4=2/+4

e:15:3=6/×15:3

e=6×5

e=30.

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