Answer:
x+7=7-x or
=-(7-x)
x=3/2 is the only solution
(-5,-7) you always have to start with the x axis which will give you the x coordinate. The y axis gives you -7 the x gives -5. (x,y)
For this question first you should find the area of the triangle so you should say:
3*6/2 = 18/2 = 9 ft
now you should find the area of the rectangular so you should say:
16*8 = 128 ft
now you should add them together so you will have:
128 + 9 = 137 square foot :)))
i hope this is helpful
have a nice day