俊狼猎英团队为您解答: 4.28x4.5+4.28x5.5=4.28×(4.5+5.5)=4.28×10=42.8
4.28x4.5+4.28x5.5=4.28x(4.5+5.5+=4.28x10=42.8
4.28x4.5+4.28x5.5=4.28x(4.5+5.5)=4.28x10=42.8