Răspuns :

Răspuns:

Explicație pas cu pas:

(81-36-a)+20=53

(45-a)+20=53

45-a=53-20

45-a=33

a=45-33

a=12

(99-b-24)+6=16+50

99-b-24=66-6

99-b-24=60

99-24-60=b

15=b

(24+c)-24=4

24+c=4+24

24+c=28

c=28-24

c=4

(6+d)-(63+6)=49

(6+d)-69=49

6+d=49+69

d=49+69-6

d=112

(e-30+50)-50+32=42

(e-30+50)=42+50-32

e-30+50=60

e=60-50+30

e=40

(96-12-40)+f-63=13

44+f=13+63

44+f=76

f=76-44

f=32

(23-18+g)+27-24-28=34

23-18+g=34-27+24+28

23-18+g=59

5+g=59

g=54

(27+7h-53)+10-(12-8)=36

27+7h-53+10-4=36

7h=36-27+53-10+4

7h=56

h=8

64-32-(6i-51)-(40-20)=9

32-(6i-51)-20=9

32-20+9=6i-51

12+9=6i-51

21+51=6i

72=6i

i=72/6

i=12

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