Which equation is modeled below? 1 negative x tile and 1 positive 1 tile = 2 x tiles and 3 positive 1 tiles negative x + 1 = 2 x + 3 x + (negative 1) = 2 x + 3 x + (negative 1) = 3 x + 2 negative 2 x = 2 x + 3

picture below

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

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