简算(8/15+9/20*2/3)÷1/12 (0.4+2/3)/(5/6-0.75)*0.5 方程 1/4x+3/4x=1/3 7/16:x =7/8:32/9
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![简算(8/15+9/20*2/3)÷1/12 (0.4+2/3)/(5/6-0.75)*0.5 方程 1/4x+3/4x=1/3 7/16:x =7/8:32/9](/uploads/image/z/638751-39-1.jpg?t=%E7%AE%80%E7%AE%97%EF%BC%888%2F15%2B9%2F20%2A2%2F3%EF%BC%89%C3%B71%2F12+%EF%BC%880.4%2B2%2F3%EF%BC%89%2F%EF%BC%885%2F6-0.75%EF%BC%89%2A0.5+%E6%96%B9%E7%A8%8B+1%2F4x%2B3%2F4x%3D1%2F3+7%2F16%EF%BC%9Ax+%3D7%2F8%EF%BC%9A32%2F9)
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简算(8/15+9/20*2/3)÷1/12 (0.4+2/3)/(5/6-0.75)*0.5 方程 1/4x+3/4x=1/3 7/16:x =7/8:32/9
简算(8/15+9/20*2/3)÷1/12 (0.4+2/3)/(5/6-0.75)*0.5 方程 1/4x+3/4x=1/3 7/16:x =7/8:32/9
简算(8/15+9/20*2/3)÷1/12 (0.4+2/3)/(5/6-0.75)*0.5 方程 1/4x+3/4x=1/3 7/16:x =7/8:32/9
(8/15+9/20*2/3)÷1/12
=(8/15+3/10)×12
=8/15×12+3/10×12
=6.4+3.6
=10
(0.4+2/3)/(5/6-0.75)*0.5
=16/15*0.5/(1/12)
=8/15×12
=6.4
1/4x+3/4x=1/3
x=1/3
7/16:x =7/8:32/9
7/8x=7/16×32/9
7/8x=14/9
x=16/9