Question

tìm y 

5/7 + y/35 = 4/5

Answer 1

y=3

Answer 2

25/35 + y/35 = 4/5

y/35 = 4/5 - 25/35

y/35 = 3/35

=> y = 3

Answer 3

\(\dfrac{5}{7}+\dfrac{y}{35}=\dfrac{4}{5}\)

\(\dfrac{x}{35}=\dfrac{4}{5}-\dfrac{5}{7}\)

\(\dfrac{x}{35}=\dfrac{4.7}{5.7}-\dfrac{5.5}{7.5}\)

\(\dfrac{x}{35}=\dfrac{28}{35}-\dfrac{25}{35}\)

\(\dfrac{x}{35}=\dfrac{3}{35}\)

\(x=3\)

\(^ofer\)