Question

bài tập : tính

3/7 nhân 56/63+3/7 nhân 17/63

Answer 1

\(\frac{3}{7}\cdot\frac{56}{63}+\frac{3}{7}\cdot\frac{17}{63}\)

\(=\frac{3}{7}\cdot(\frac{56}{63}+\frac{17}{63})\)

\(=\frac{3}{7}\cdot\frac{73}{63}=\frac{3\cdot73}{7\cdot63}=....\)

 Bạn tự tính nhé

Answer 2

  \(\frac{3}{7}\)x \(\frac{56}{63}\) + \(\frac{3}{7}\)x \(\frac{17}{63}\)

= \(\frac{3}{7}\)x \(\left(\frac{56}{63}+\frac{17}{63}\right)\)

= \(\frac{3}{7}\)x   \(\frac{73}{63}\)

= \(\frac{73}{147}\)