(1)x-15%x=1.7+2/3 (2)x:1/7=0.5×1/5
(1)x-15%x=1.7+2/3(2)x:1/7=0.5×1/5要快!!!!!!!!!!...
(1)x-15%x=1.7+2/3 (2)x:1/7=0.5×1/5
要快!!!!!!!!!!
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shuidimeiyan
推荐于2021-01-20
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x-15%x=1.7+2/3
85%x=1.7+2/3
17/20*x=1.7+2/3
x=(1.7+2/3)*20/17
x=2+40/51=142/51
x:1/7=0.5×1/5
7x=0.1
x=0.1/7=1/70
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