要过程!!!急!!!
2016-11-07 · 知道合伙人教育行家
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2-3\4×5\3÷4\5
=2-3\4×5\3×5\4
=2-25\16
=2-1 9\16
=1 7\16
(1-1\3×7\4)×5\6
=(1-7\12)×5\6
=5\12×5\6
= 25\72
2\3÷(1-2\3)×5\6
=2\3÷1\3×5\6
=2\3×3×5\6
=5\3
=1 2\3
2\5 ×3\4-1\2÷5
=3\10-1\2×1\5
=3\10-1\10
=2\10
=1\5
1\4×12\13÷9\8
=1\4×12\13×8\9
=4\13×2\3
=8\39
约分过程我打不出来,你还是要写的,祝学习进步~~~~
=2-3\4×5\3×5\4
=2-25\16
=2-1 9\16
=1 7\16
(1-1\3×7\4)×5\6
=(1-7\12)×5\6
=5\12×5\6
= 25\72
2\3÷(1-2\3)×5\6
=2\3÷1\3×5\6
=2\3×3×5\6
=5\3
=1 2\3
2\5 ×3\4-1\2÷5
=3\10-1\2×1\5
=3\10-1\10
=2\10
=1\5
1\4×12\13÷9\8
=1\4×12\13×8\9
=4\13×2\3
=8\39
约分过程我打不出来,你还是要写的,祝学习进步~~~~
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