Question

n4+1=74 решите срочно. там точно не 11

Answer 1

n/4+1=7/4 |*4
n+4=7
n=3

Answer 2

n/4+1=7/4
n/4=7/4-1
n/4=7/4-4/4
n/4=3/4
n=3/4*4
n=3