Step-by-step explanation:
the sum of angle jnm and knp should be 90°
so (7x+2)+(10x+3)=17x+5=90
x=5
so angle knp is 53°
lnk is 90-53=37°
jnm is 37°
jnl js 180-37=143°
jnl is 37+90=127°
