解方程和比例 8.3-7x=1.2*4 45:x=6:0.75 x-7*0.3=6.4 4.5:x=0.8:1又9分之7 1.2:x=3:1又3分之2
解方程和比例 8.3-7x=1.2*4 45:x=6:0.75 x-7*0.3=6.4 4.5:x=0.8:1又9分之7 1.2:x=3:1又3分之2
x:2又2分之1=0.36:5
x:2又2分之1=0.36:5
数学人气:145 ℃时间:2019-08-20 07:05:16
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8.3-7x=1.2*47x=8.3-1.2×47x=8.3-4.87x=3.5x=0.545:x=6:0.75 6x=45×0.756x=33.75x=5.625x-7*0.3=6.4x=6.4+7×0.3x=6.4+2.1x=8.54.5:x=0.8:1又9分之74.5:x=0.8:16/90.8x=4.5×16/90.8x=8x=101.2:x=3:1又3分之...
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