Question

7/5-y=2/7

Answer 1

Lời giải:

$\frac{7}{5}-y=\frac{2}{7}$

$y=\frac{7}{5}-\frac{2}{7}$

$y=\frac{39}{35}$

Answer 2

7/5-y=2/7

     y  =7/5-2/7

      y  =39/35

Answer 3

7/5-y=2/7

      y= 7/5=2/7

     y = 39/35

học tốt nhé!!!