Question

3x+y=5
y=2x
Substitution method

Answer 1

Substitute 2x as y:

3x + y = 5
3x + 2x = 5
5x = 5
x = 1

Now, substitue 1 as x into one of the two equations:

y = 2x
y = 2(1)
y = 2

Hope this helps!