Answer:
P = 2x + 14
Step-by-step explanation:
The perimeter of a shape is the total measurement of all the edges of a shape.
P = 12 + (x - 12) + 1 + [(x-5) - (x-12)] + [12 - 1] + (x-5)
P = 12 + x - 12 + 1 + [ x - 5 - x + 12] + 11 + x - 5
P = x + x + 12 - 12 + 1 + 7 + 11 - 5
P = 2x + 14
