Find x so that GJ is parallel to FK if GF=12, HG=6, HJ=8, and JK=x-4.

Answer:
x=20
Step-by-step explanation:
(12+6)/(8+x-4) =6/8
18/(x+4)=6/8
6(x+4) =(18)(8)
(x+4) =(18)(8)/6
x+4 =(3)(8)
x+4=24
x=-4+24
x=20