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choli [55]
3 years ago
14

Help me out with this one please

Mathematics
2 answers:
Anna11 [10]3 years ago
8 0

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

dlinn [17]3 years ago
8 0

Answer:

For question 5, x= -1

Step-by-step explanation:

Segment Addition Postulate = ab+bc=ac

For Question 5,

(a)     +    (b)  = (c)  

5+2x  +   6    = x+10

5+2x+6=x+10

<u>To solve that, </u>

5+2x+6=x+10

<u>Add 5+6 </u>

11+2x=x+10

<u>Subtract 11 from both sides</u>

2x= x-1

x-1=2x

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