Question

Media aritmetica a numerelor rationale 6,1; 4,6: si x este egal cu 5,3. Aflati numarul x.plizz

Answer 1

[6.1+4.6+x]:3=5.3
10.7+x=5.3 x 3
10.7+x=15.9
x=15.9-10.7
x=5.2

Answer 2

6.1+4.6+x/3=5.3
10.7+x/3=5.3   /*3
10.7+x=15.9
x=5.2