1) Sama beratnya 2) 5+3+2= 1+5-10+2+2 9+2+4 = 1+8+3+6-5+2 5+4+5 = 20+2-5-4+1 5+6+7 = 30-3-5+5-9 8+6+3 = 482266 3. (9:9+9)+(9x9+9)