Question

how do you solve using substitution method y-2x=0,x+y-9=0

Answer 1

Answer:

x=3

y=6

Step-by-step explanation:

y-2x=0,x+y-9=0

y=2x

x+y-9=0

x+2x=9

3x=9

x=3

put x=3

y=2*3

y=6

Answer 2

Step-by-step explanation:

y-2x=0

x+y=9

y=0+2x

substitute equation 3 in equation 2

x+y=9 is eq 2

x+0+2x=9

3x=9

x=9/3

x=3

substitute x=3 in equation 3

y=0+2x is eq 3

y=0+2(3)

y=0+6

y=6

finally answer is x=3, y=6