
×:3.6=1/2:6/7解比例?
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×:3.6=1/2:6/7 等比性质,两内项之积等于两外项之积故又
3.6×1/2 = 6/7 × x
6x/7 = 1.8
x = 1.8 ÷ 6/7
x = 1.8 × 7/6
x = 2.1
3.6×1/2 = 6/7 × x
6x/7 = 1.8
x = 1.8 ÷ 6/7
x = 1.8 × 7/6
x = 2.1
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