Question

2x = 5y-9
1+x+4y = 3​

Answer 1

1+x+4y=3

x=3-1-4y              

x=2-4y

x=2-4(1)

x=2-4=-2

2x=5y-9

2(2-4y)=5y-9

4-8y=5y-9

4+9=5y+8y

13=13y

13/13=y

1=y