Consecutive angles in a paralleogram have sum 180
[tex]\\ \rm\rightarrowtail 5z+4+86=180[/tex]
[tex]\\ \rm\rightarrowtail 5z+90=180[/tex]
[tex]\\ \rm\rightarrowtail 5z=90[/tex]
[tex]\\ \rm\rightarrowtail z=18[/tex]
And
- 7y+3+86=180
- 7y+89=180
- 7y=91
- y=13
And
opposite angles are equal
