- 1/2, because -1/2 + 1/2 = 0
Answer:
0.45
Step-by-step explanation:
Step 1:

Step 2:
8 · x = 0.3 · 12
8x = 3.6
Last Step: Divide both sides by 8 to isolate the value x
Triangle ABF has base 10 and height 3, so area (1/2)*10*3 = 15.
Trapezoid EBCD has bases 6 and 7 and height 6, so area
.. (6+7)*6/2 = 39
The total area of the figure is
.. 15 +39 = 54 . . . . . square units
It would be 67 because its the same decrease as the other.