x+3y=24

x+3y=24

y=2

X=?

 

This is a substitution question.

 

So by substituting in [y = 2] . . .

 

x + 3*(2) = 24

x + 6 = 24

x = 18

X = 18

Plug in 2 for "Y" and you get 6. Subtract 6 from 24 to get "X".