5xyz=5x 1000+x x 100+y x 10+z
5xyz=5000+100+10 (x+y+z)
5xyz=5110 (x+y+z)
2xyz= 2 x 10000+x x 1000+y x 100+z x 10+
2xyz6=20000+1000+100+10+ (x+y+z)
2xyz5=2110 (x+y+z)
=>2xyz=5xyz-1190
5xyz=2xyz+1190
5xyz=2110(x+y+z)+1190
5xyz=5110 (x+y+z) A
2xyz=5110 (x+y+z)-1190
2xyz=2111 (x+y+z) A
