x:4=a rest 3
⇒x=4a+3
x:5=b rest 3
⇒x=5b+3
x:6=c rest 3
⇒x=6c+3
x:7=d rest 3
⇒x=7d+3
x=4a+3 |
x=5b+3 | scadem de
x=6c+3 | la toate 3
x=7d+3 |
x-3=4a_______⇒
x-3=5b_______⇒ (*rezulta din toate ca*)
x-3=6c_______⇒ x-3=[4,5,6,7]
x-3=7d_______⇒
x=cel mai mic _⇒
[4,5,6,7]= 2 ²×5×3×7 = 4×5×21 = 20×21 = 420
x-3=420
x=420+3
x=423
