Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).

x - 2y = 0
4x - 3y = 15

Answer 1

i dont understand

Answer 2

you do it the same way as the other:

get one of the equations in form like x=... or y=...
in this case x=2y would be the easiest.

then put this new equation into the second one:
4*(2y)-3y=15
8y-3y=15
5y=15
y=3

now you go back to your first equation:
x=2y

since we now know that y=3
x=2*3
x=6

Answer 3

in the first one move -2y to the other side making x = 2y substitute 2y in for x
8y - 3y = 15
5y=15
y=3
substitute y into the first or second
x-6=0
x=6

Answer 4

from equation 1, x=2y ...(1)
from equation 2, y=(4x-15)/3 ...(2)

(1) to (2) by substitution
we get y=3
AND X=6