Question

[(397-355):7+42]:8×n=54​

Answer 1

[(397-355):7+42]:8×n=54

(42:7+42):8×n=54

(6+42):8×n

48:8×n

n=48:8

n=6

Explicație pas cu pas:

n=6

Answer 2

[(397-355):7+42]:8•n=54
[42:7+42]:8•n=54
[6+42]:8•n=54
48:8•N=54
6•n=54 = 54:6=9
N=9
6•9=54