She should have added 2 to both sides of the equation instead of subtracting 2.
2x -2 = 14
Add 2 to both sides:
2x = 16
Divide both sides by 2:
x = 8
Answer:
56
Step-by-step explanation:
49 + 9x units
perimeter is sum of all the sides
(19.20.21.22.23.24.25.26.27)