8 4*int2.5(1.25*(3.7 2.3))的值
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=5/12*0.8+7/12*0.8=(5/12+7/12)*0.8=1*0.8=0.8
①原式=(-5-1/8+5/4)×16=-5×16-1/8×16+5/4×16=-80-2+20=-60-2=-62原式=-3/8×(-24-10/3+4/5)=3/8×24+3/8×10/3-3/8
6/5=1.2(84+2×)÷(84+×)=1.284+2x=84*1.2+1.2x0.8x=84*0.2x=21
(10-0.2)*5=10*5-0.2*550-149
再答:0.75
3/8*5/4+1.25+0.625*1.25=0.375*1.25+0.625*1.25+1.25=(0.375+0.625+1)*1.25=2*1.25=2.5
(1.5*1.25+1.75*1.5)*5=1.5*(1.25+1.75)*5=1.5*3*5=4.5*5=22.5
5x=3.2+55x=8.2x=1.64
3.14×1.25+31.4×0.035+0.314×84=3.14×1.25+3.14×0.35+3.14×8.4=3.14×(1.25+0.35+8.4)=3.14×10=31.4再答:请采纳
5/1.25=(5*8)/(1.25*8)=40/10=4再问:怎么晚回答╯﹏╰都迟了、不过还是谢谢了
(1)((5/9)×(9/2)-2/(5/4))/7=(5/2-5/2)/7=0(2)(4-(35/65)×(26/5))÷(1/100)=(4-14/5)×100=120\7(3)18.25×(59
4.58*1.25+45.8*0.035+0.458*84=4.58*1.25+4.58*0.35+4.58*8.4=4.58*(1.25+0.35+8.4)=45.8
1.25×38+125%×3-5÷4=1.25×(38+3-1)=1.25×40=50
等下再答: 再答:先采纳好吗再答: 再答: 再答: 再答: 再答:
1.25+0.75*5=0.25*5+0.25*15=0.25*(5+15)=0.25*20=5
0.91除以4/5+1.25*1.09=0.91*1.25+1.25*1.09=1.25*(0.91+1.09)=1.25*2=2.5
20
1.25*17.6+1.25*36+1.25*10->1.25*(17.6+36+10)
1.25*2+1.25*5+0.03*5=1.25*7+0.03*5=8.9再问:0.03是咋回事?再答:1.28=1.25+0.03
6:5=(2x+84):(x+84)5(2x+84)=6(x+84)10x+420=6x+5044x=84x=21