Question

Prove that 45-45=45
In mathematics

Answer 1

45=1+2+3+4+5+6+7+8+9
45=9+8+7+6+5+4+3+2+1

so 45-45-=987654321-123456789=864197532
now
8+6+4+1+9+7+5+3+2=45
hence proved