Question

use substitute to solve x=3y and 3x-5y=12

Answer 1

They said to use substitute method So its simple put x = 3y in 3x - 5y = 12

3(3y) - 5y = 12

Simplify this for y value and then substitute y value in x :)

Answer 2

thanks a lot

Answer 3

Substitute the equation that you will use by the value of the variable
3x-5y=12
3(3y)-5y=12
9y-5y=12
4y=12
4y/4=12/4
y=3

Then substitute the value of x
x=3y
x=3(3)
x=9

Then check it:
x=3y
9=3(3)
9=9

Answer 4

Ok just ignore what I said, I did not fully read the question.

Answer 5

lol ok