Answer:
x = 4 ; DF = 18
x+7 + 7 = 4x + 2
x + 14 = 4x + 2
x - 4x = -14 + 2
- 3 x = - 12
3x = 12
x = 4, then
x + 7 + 7 = 14 + 4 = 18
x = 4
DF = 18
Step-by-step explanation:
(x + 14 is ths sum of of DE and EF)
14 = 3x + 2 ## ^ Subtraction POE
12 = 3x ## ^ Subtraction POE
4 = x ## ^ Division POE
DE = 4 + 7 = 11
EF = 7
11 + 7 = DF
