Answer:
5
Step-by-step explanation:
6=20-3x
combine
6-20=-3x
-14 = -3x
divide by -3
-14/-3 = -3x/-3
x = 4.666 repeatedly
x = 5 approximately
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the area is 17.5 ft if the shape is a square/rectangle
the area is 8.75 ft if the shape is a triangle
