Help, this is from a practice test i got to take home and study for tomorrows test. I keep getting some really really different answers, even making the equation confused me

The solution of the system of linear equations is b. (2,-3) because the solution is the poi (point of intersection)

1) add 6 to 24, write the rest of the equation 10-2x= 30 subtract 10 from 30 2x=20 divide 20 by 2 and x=102) add 3 to -9 write the rest of the equation 4x+3=-6 subtract 3 from -6 4x=-9 x= -2.25  i don't know the rest sorry