4/5+14/5x4/7 6÷2/3+2/3÷6 - 知识问答

4/5+14/5x4/7 6÷2/3+2/3÷6 35 又7/11÷7 9/11÷8-5/11x1/8 2/5x「（1/

1个回答

4/5+14/5x4/7
=4/5+4/5×2
=4/5×3
=2.4
6÷2/3+2/3÷6
=9+1/9
=9又1/9
35 又7/11÷7
=35÷7+7/11÷7
=5+1/11
=5又1/11
9/11÷8-5/11x1/8
=（9-5)×1/11×1/8
=4×1/11×1/8
=1/22
2/5x「（1/4+2/5）÷13/20」
=2/5×[13/20÷13/20]
=2/5

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