If x = 5 and y = 3, what does z equal?

2x + 2z = 10y

The answer is 10.
2x= 2 times 5
2 times 5=10
10y=10 times 3
10 times 3= 30
Which means that the total is 30.
We know that 2x=10 , if the total is 30 then z must be something that'll give us 20 , because 10 plus 20 equals 30.
2z= 20
Z= 10
10 times 2=20

Your answer should be 1/3. i hope i could ! good luck : )