Question

tìm y

y + 4/5 = 4/5 - mở ngoặc 3/7 + 3/5 đóng ngoặc

 

Answer 1

\(y+\dfrac{4}{5}=\dfrac{4}{5}-\left(\dfrac{3}{7}+\dfrac{3}{5}\right)\)
\(y=\dfrac{4}{5}-\left(\dfrac{3}{7}+\dfrac{3}{5}\right)-\dfrac{4}{5}\)
\(y=\dfrac{36}{35}\)

Answer 2

...

( là mở ngoặc

y + 4/5 = 4/5 - (3/7 + 3/5)

y + 4/5 = 4/5 - 36/35

Lỗi đề :v

Answer 3

\(y+\dfrac{4}{5}=\dfrac{4}{5}-\dfrac{36}{35}=-\dfrac{8}{35}\)

\(y=-\dfrac{8}{35}-\dfrac{4}{5}=-\dfrac{36}{35}\)