0.375×98-3/8+3×3/8=3/8×98-3/8+3×3/8=3/8×(98-1+3)=3/8×100=37.5
解:0.375x98一3/8十3x3/8二3/8x98一3/8十3x3/8二3/8x(98一1十3)二3/8x100二37.5