Question

Ajutati-ma, va rog. E urgenttt! Dau coroana
Afla valoarea lui a, b, c si d:
(45+27)-a=39
b-(25+19)=38
(6*c)+49=73
(81:d)*6=54

Answer 1

(45+27)-a=39

72-a=39

a=72-39

a=33

b-(25+19)=38

b-44=38

b=38+44

b=82

(6×c)+49=73

6×c=73-49

6×c=24

c=24:6

c=4

(81:d)×6=54

81:d=54:6

81:d=9

d=81:9

d=9

Answer 2

Răspuns:

(45 + 27) - a = 39

72 - a = 39

72 - 39 = a

a = 33

b-(25+19) = 38

b - 44 = 38

b = 38 + 44

b = 82

(6×c)+49 = 73

6c + 49 = 73

6c = 73 - 49

6c = 24

c = 4

81/d × 6 = 54

486/d = 54/1

d = 486/54

d = 9