Răspuns :
425=400+20+5
389=300+80+9
573=500+70+3
104=100+4
870=800+7
999=900+90+9
389=300+80+9
573=500+70+3
104=100+4
870=800+7
999=900+90+9
[tex]425 = 400 + 20 + 5 \\ \\
389 = 300 + 80 +9 \\ \\
573 = 500 + 70 + 3 \\ \\
104 = 100 + 4 \\ \\
870 = 800 + 70 \\ \\
999 = 900 + 90 + 9 \\ \\ \\ \\
Succes !
[/tex]