Answer:
9.
Step-by-step explanation:
|2x+6|-4=20
or,|2x+6|=24
or,2x=24-6
or,x=18/2
x=9
5(x)+2(y)=3.45
7(x)+3(y)=4.90
611.08
Be sure to treat the two shapes as completely different figures, then add their totals together