Question

Qual e o valor de 13y-5=11+9y e 11-7y=13-8y

Answer 1

Olá...

13y - 5= 11 + 9y

13y - 9y= 11 + 5

4y= 16

y= 16/4

y= 4

___________________

11 - 7y= 13 - 8y

- 7y + 8y= 13 - 11

1y= 2

y= 2/1

y= 2