Answer:
5) x = -1
6) x = 2
Step-by-step explanation:
5) 5 + 2x + 6 = x + 10
2x + 11 = x + 10
2x + 1 = x
1 = -x
-1 = x
6) (9x + 7) + (-3x + 20) = 39
6x + 27 = 39
6x = 12
x = 2
For question 5, x= -1
Segment Addition Postulate = ab+bc=ac
For Question 5,
(a) + (b) = (c)
5+2x + 6 = x+10
5+2x+6=x+10
To solve that,
Add 5+6
11+2x=x+10
Subtract 11 from both sides
2x= x-1
x-1=2x
