Answer:
Side TV = 16
Step-by-step explanation:
WX is half the value of TV
to solve we have to set up an equation
21-5x=10x-2
because side WX is only have of side TV we have to multiple its side by 2 so now we have
21-5x=20x-4
step 1 add 4 to each side
25-5x=20x
step 2 add 5x to each side
25=25x
step 3 divide each side by 25
x=1
then we plug in x as 1 for side TV and get
21-5 which is equal to 16
