Answer:
Solutions of the equations are x= -1 and y =1
Step-by-step explanation:
[tex]2y+7x = -5\\5y-7x=12[/tex]
adding above equations we get
[tex]2y+5y+7x-7x =-5+12\\7y=7\\y=1[/tex]
Substitute y= 1 in above equation, we get x
[tex]2y+7x=-5\\2(1)+7x=-5\\7x=-5-2\\x=-1[/tex]
therefore solutions of the equations are x= -1 and y =1
