Toán Lớp 5: 8/15 + 4/7 x 7/15 + 1/5 – 2010/2019
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Toán Lớp 5: 8/15 + 4/7 x 7/15 + 1/5 – 2010/2019
Comments ( 2 )
Giải đáp:
= 9/2019
Lời giải và giải thích chi tiết:
8/15 + 4/7 × 7/15 + 1/5 – 2010/2019
= 8/15 + 4/15 + 3/15 – 2010/2019
= ( 8/15 + 4/15 + 3/15 ) – 2010/2019
= 15/15 – 2010/2019
= 1 – 2010/2019
= 2019/2019 – 2010/2019
= 9/2019
8/15+4/7×7/15-2010/2019
=8/15+4/15+1/5-2010/2019
=15/15-2010/2019
=1-2010/2019
=2019/2019-2010/2019
=9/2019