1.简算1×1/27+5/9×1/27+4/9÷272×1/27+5/9×1/27+4/9÷27 (第一个数打错了是2)
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![1.简算1×1/27+5/9×1/27+4/9÷272×1/27+5/9×1/27+4/9÷27 (第一个数打错了是2)](/uploads/image/z/106639-7-9.jpg?t=1.%E7%AE%80%E7%AE%971%C3%971%2F27%2B5%2F9%C3%971%2F27%2B4%2F9%C3%B7272%C3%971%2F27%2B5%2F9%C3%971%2F27%2B4%2F9%C3%B727+%28%E7%AC%AC%E4%B8%80%E4%B8%AA%E6%95%B0%E6%89%93%E9%94%99%E4%BA%86%E6%98%AF2%EF%BC%89)
1.简算1×1/27+5/9×1/27+4/9÷272×1/27+5/9×1/27+4/9÷27 (第一个数打错了是2)
1.简算1×1/27+5/9×1/27+4/9÷27
2×1/27+5/9×1/27+4/9÷27 (第一个数打错了是2)
1.简算1×1/27+5/9×1/27+4/9÷272×1/27+5/9×1/27+4/9÷27 (第一个数打错了是2)
2×1/27+5/9×1/27+4/9÷27
=(2+5/9+4/9) *1/27
=3*1/27
=1/9
1*1/27+5/9*1/27+4/9*1/27
=1/27+(5/9+4/9)*1/27
=1/27+1/27
=2/27
2/27
1.简算1×1/27+5/9×1/27+4/9÷272×1/27+5/9×1/27+4/9÷27 (第一个数打错了是2)
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