(4-⅝)x(5-¾)+(3-½ x ⅜)

(4-⅝)x(5-¾)+(3-½ x ⅜)=(3 8/8-5/8)*(4 4/4-3/4)+(2 1/2*3/8)=3 3/8*4 1/4+5/2*3/8=27/8*17/4+15/16=459/32+15/16=459/32+30/32=489/32=15 9/32

(4-5/8)x(5-3/4)+(3-1/2x3/8)= 27/8x17/4+3-3/16= 459/32+45/16=459/32+90/32=549/32. sadze ze jest to dobrze.;) x-oznacza razy /-kreska ulamkowa