Question

tìm y: y x 5 - y : 5 = 15

Answer 1

`#3107.101107`

\(y\times5-y\div5=15\\ y\times5-y\times\dfrac{1}{5}=15\\ y\times\left(5-\dfrac{1}{5}\right)=15\\ y\times\dfrac{24}{5}=15\\ y=15\div\dfrac{24}{5}\\ y=\dfrac{25}{8}\)

Vậy, `y=`\(\dfrac{25}{8}.\)

Answer 2

ko cs gia tri

 

Answer 3

y:y*5-y:5=15

1*5-y:5=15

5-y:5=15

   y:5=5-15

   y:5=-10

      y=-10:5

      y=-2

Answer 4

Y:5-y×5=15

Y×1/5-y×5=15

Y×{1/5+5)=15

Y×26/5=15

Y=15:26/5

Y=75/26

 

Answer 5

$y x 5-y:5=15$

=>y x(5+1/5)=15

=> y x 26/5=15

=>          y=75/26

Vậy y=75/26