Question

va rog ajutor..
nu mi iese
dau coroana

Answer 1

(7n+1):60=c1 rest  59 => 7n+1=60·c1+59; 7n=60·c1+58;  inmultim cu 4

(9n+25):80=c2 rest 1 => 9n+25=80·c2+1; 9n=80c2-24;  inmultim cu 3

28n=240c1+232

27n=240c2-72   (-)

......................................

(28n-27n)=240(c1-c2) +232+72

n=240(c1-c2)+ 304

n=240(c1-c2)+240+64

n:240=[240(c1-c2)+240+64]:240

n:240=c1-c2+1, rest 64