Can someone substitute this? Please and thank you

Step-by-step explanation:

soln

given

y=2x+3 (i)

y=-x-9 (ii)

now, putting value of equation (i) in (ii)

y= -x-9

or, 2x+3 = -x-9

or, 2x+x = 9-3

or, 3x = 6

or, x = 6/3

or, x = 2

again,

y = 2x+3

or, y = 2×2+3

or, y = 7

therefore, value of X and Y are 2 and 7 respectively.

ik how do do this just give me a few minutes and i will give it to

step-by-step explanation: