Question

Can someone please help me and explain how to solve them Will give 45 points

Answer 1

A.) Blue triangle: 4x+2 + 7x+7 + 5x-4 =
The perimeter of the blue triangle is 16x-5.

Pink triangle: 2x-5 + x+7 + x+3= 4x-5


B.) 16x-5 - 4x-5= 12x


C.) Blue triangle: 16(3)-5= 43

Pink triangle: 4(3)-5= 7

Answer 2

Recall that the perimeter is the sum of all the sides.  So, for the first triangle, the perimeter is 4x+2+7x+7+5x-4 = 16x + 5 

second triangle:  x+3 + 2x-5 + x+7  (combine like terms)

Part b:  Subtract the perimeter of the smaller triangle from the perimeter of the larger triangle.