7 + 4x = 1x + 2x I simplified the problem and got 7 + 4x = 3x, however when I do -4 to both sides I end up with 7 = -1 and the answer would be -7 and I checked and said it was wrong so I’m stuck here.

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

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

it should be a.

hope it

need more info

step-by-step explanation: