2/6 + 3/4 5/2 + 1/6 1/7 + 6/14 2/5 + 3/5

Đáp án+Giải thích các bước giải:

$\dfrac{2}{6}$ + $\dfrac{3}{4}$

=$\dfrac{1}{3}$ + $\dfrac{3}{4}$

= $\dfrac{4}{12}$ + $\dfrac{9}{12}$

= $\dfrac{4+9}{12}$

= $\dfrac{13}{12}$

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$\dfrac{5}{2}$ + $\dfrac{1}{6}$

= $\dfrac{15}{6}$ + $\dfrac{1}{6}$

= $\dfrac{15+1}{6}$

= $\dfrac{16}{6}$

= $\dfrac{8}{3}$

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$\dfrac{1}{7}$ + $\dfrac{6}{14}$

= $\dfrac{2}{14}$ + $\dfrac{6}{14}$

= $\dfrac{2+6}{14}$

= $\dfrac{8}{14}$

= $\dfrac{4}{7}$

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$\dfrac{2}{5}$ + $\dfrac{3}{5}$

= $\dfrac{2 + 3}{5}$

= $\dfrac{5}{5}$

= 1