5+10x+5.15=60.15 what's the value of x?

5 + 10x + 5.15 = 60.15 
Add the common like terms: 5 + 5.15 = 10.15

New equation:
 10.15 + 10x = 60.15

Subtract the 10.15 from 60.15

 10.15 + 10x = 60.15
- 10.15          -10.15
________________
10x = 50 

Now divide 10x by 10 and 50 by 10.

= 
  x = 5

5 is your final answer. 

I hope this helped!!

If is congruent to,then m is the midpoint