求解几道计算题 -4.2+5.7-8.4+10 6.1-3.7-4.9+1.8 1/3-2/3+1 (-1/4)+5/6+2/3-2/1
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![求解几道计算题 -4.2+5.7-8.4+10 6.1-3.7-4.9+1.8 1/3-2/3+1 (-1/4)+5/6+2/3-2/1](/uploads/image/z/67736-56-6.jpg?t=%E6%B1%82%E8%A7%A3%E5%87%A0%E9%81%93%E8%AE%A1%E7%AE%97%E9%A2%98+-4.2%2B5.7-8.4%2B10+6.1-3.7-4.9%2B1.8+1%2F3-2%2F3%2B1+%EF%BC%88-1%2F4%EF%BC%89%2B5%2F6%2B2%2F3-2%2F1)
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求解几道计算题 -4.2+5.7-8.4+10 6.1-3.7-4.9+1.8 1/3-2/3+1 (-1/4)+5/6+2/3-2/1
求解几道计算题 -4.2+5.7-8.4+10 6.1-3.7-4.9+1.8 1/3-2/3+1 (-1/4)+5/6+2/3-2/1
求解几道计算题 -4.2+5.7-8.4+10 6.1-3.7-4.9+1.8 1/3-2/3+1 (-1/4)+5/6+2/3-2/1
-4.2+5.7-8.4+10
=-12.6+15.7
=3.1
6.1-3.7-4.9+1.8
=7.9-8.6
=-0.7
1/3-2/3+1
=2/3
(-1/4)+5/6+2/3-1/2
=5/6+2/3-1/4-1/2
=3/2-1/4-1/2
=3/4