Question

determinati x apartine lui N pentru care 12 supra x+1 apartine lui N

Answer 1

D12={1,2,3,4,6,12}
Avem fractia 12 supra x+1
x+1=1
x=1-1
x=0

x+1=2
x=2-1
x=1

x+1=3
x=3-1
x=2

x+1=4
x=4-1
x=3

x+1=6
x=6-1
x=5

x+1=12
x=12-1
x=11

Answer 2

(x+1)*n=12
n=1,2,3,4,6,12→x+1=12,6,4,3,2,1→x=11,5,3,2,1,0