Answer:
11q-12+29
Step-by-step explanation:
Add like terms which in this case would be -5 and -7 which would equal -12. Those are the only like terms so your answer would be 11q-12+29
Answer:

Step-by-step explanation:
The question is incomplete, as what is required is not stated and the triangle is not given.
So, I will solve generally.
The proof is as follows (see attachment for triangle)
From the attachment, we have:



Make f, e and d the subject



Add up the equations

Collect like terms


We have:

--- angles in a triangle
So, we have:

--- proved
It takes 10 workers 5 days to complete a road repair when working 2 hours a day.
So, this becomes :
man hours required to finish the work.
Given is, if 2 people work for 5 hours a day, then let the number of days to finish the road be = d
So, total man hours = 
Now,
or 
Hence, it will take 10 days for 2 people working 5 hours daily, to complete the work.