Answer:
x = 9 , jk = 42 , kl= 78
Step-by-step explanation:
Explained in the paper.
Goodluck
x = 9
[tex](4x+6)+(7x+15)=120[/tex]
[tex](4(9)+6)+(7(9)+15)=120[/tex]
[tex](36+6) + (63+15)=120[/tex]
[tex](42)+(78)=120[/tex]
JL = 42
KL = 78
