Question

substitution method 2x+3y=9 and 3x+4y=5​

Answer 1

1. 2x +3y=9
2. 3x+4y=5

2x=9-3y

x=9-3y/2

3(9-3y/2)+4y=5

27-9y/2+4y=5

27-9y+8y=10

27-10=y

17=y

subtitutr 4 by 1

3x +3(17)=9

2x=9-41

2x=-42

x=-42/2

x=-21&y=17

hope it help

Thank you