Question

use substitution to solve
x=y/2-1

6x+5y=26

Answer 1

x=y/2-1
6x+5y=26

6y+5y=26
11y=26
y=26/11

x=26/11

Answer 2

x=(y/2)-1 first equation

6x+5y=26 second equation

putting value of x in second equation

we get

6{(y/2)-1}+5y=26

6{(y-2)/2}+5y=26

(6y-12)/2+5y=26

(6y-12+10y)/2=26

16y=62

y=62/16

y=31/8

x=y/2-1

x=(31/16)-1

x=15/16