Question

What is the value of y in the following stystem?

y= 3x-5
6x+3y=15

y=?

Answer 1

Answer: y=1

replace y in the second equation you get x
then replace x in anh equation and you'd get get y

Answer 2

Take y = 3x - 5 and plug it into the equation below.
6x + 3(3x - 5) = 15. Solve for x.
6x + 9x - 15 = 15
15x = 30
x = 2
Now plug x back into the equation y = 3x - 5.
y = 3(2) - 5.
y = 6 - 5
y = 1