Question

Tìm y:  y x 3/5 - y : 5 = 4   Giúp tui với

Answer 1

y x \(\dfrac{3}{5}\) - y : 5 = 4

=> y x \(\dfrac{3}{5}\) - y x \(\dfrac{1}{5}\) = 4

=> y x \(\left(\dfrac{3}{5}-\dfrac{1}{5}\right)\) = 4

=> y x \(\dfrac{2}{5}\) = 4

=> y        = 4 : \(\dfrac{2}{5}\)

=> y = 10 

Answer 2

3535 - y : 5 = 4

1515 = 4

(35−15)(35−15) = 4

2525 = 4

2525

=> y = 10  học tốt