Respuesta :

Answer:

9

Step-by-step explanation:

10 + 8=18

2(9)=18

When an variable is beside a number it automatically becomes multiplication, it would alter if there was another sign there or it is written.

Answer:

y=9

Step-by-step explanation:

Writing out the equation makes it easier to work with.

10+8=2y

First lets add the 10 and the 8 to combine like terms.

18=2y

Now divide both sides by 2

18/2=2y/2

do the division

9=y

The value of y is 9.