Answer: 22
Step-by-step explanation:
[tex]x + y= 39\\x-y=5\\[/tex]
multply the buttom eqn with -1
[tex]x + y=39\\-x+y=-5[/tex]
solve for y
[tex]2y=34\\y= 34/2\\y= 17[/tex]
substitute y into one of the eqn
[tex]x+y=39\\x+17=39[/tex]
subtract 17 from both side
[tex]x= 39-17\\x=22[/tex]
