Question

Aflați pe X din egalitatea { [ 72 + 53 × ( 12 × X ) ] - 27 × 15 : 761 + 8 = 10

Answer 1

{[72+53x(12xX)]-27x15}:761=10-8
[72+53x(12xX)]-405=2x761
72+53x(12xX)=1522+405
53x(12xX)=1927-72
12xX=1855:53
X=35:12
X=35/12

Verificare
[(72+53x12x35/12)-405]:761+8=10
[(72+53x35)-405]:761+8=10
[(72+1855)-405]:761+8=10
(1927-405):761+8=10
1522:761+8=10
2+8=10
10=10