(82+90)+187*4 = 172+748=920 91*4-(82+90)=364-172=192 91*4 - 23*10 =364-230134 68*11 : (26-22) =748:4=187 46 * 20 : (52-48) = 920: 4 = 230 24*8+17*11=192+187= 379