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Question

Tinh thuận tiên 2/5+3/7+3/5+4/7

Cihce · Accepted Answer

$\dfrac{2}{5}+\dfrac{3}{7}+\dfrac{3}{5}+\dfrac{4}{7}\
=\left(\dfrac{2}{5}+\dfrac{3}{5}\right)+\left(\dfrac{3}{7}+\dfrac{4}{7}\right)\
=\dfrac{5}{5}+\dfrac{7}{7}\
=1+1\
=2.$Câu trả lời: $\dfrac{2}{5}+\dfrac{3}{7}+\dfrac{3}{5}+\dfrac{4}{7}\
=\left(\dfrac{2}{5}+\dfrac{3}{5}\right)+\left(\dfrac{3}{7}+\dfrac{4}{7}\right)\
=\dfrac{5}{5}+\dfrac{7}{7}\
=1+1\
=2.$

Ngô Hải Nam · Answer

`2/5+3/7+3/5+4/7``=(2/5+3/5)+(3/7+4/7)``=5/5+7/7``=1+1``=2`Câu trả lời: `2/5+3/7+3/5+4/7``=(2/5+3/5)+(3/7+4/7)``=5/5+7/7``=1+1``=2`

animepham · Answer

` 2/5+3/7+3/5+4/7``= ( 2/5+3/5)+(3/7+4/7)``=    1 + 1 = 2`Câu trả lời: ` 2/5+3/7+3/5+4/7``= ( 2/5+3/5)+(3/7+4/7)``=    1 + 1 = 2`

a. 2 × 9 × 5 × 7 × 4 × 25	b. 6 × 14 × 5 × 4 × 2 × 25
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