In order to find the number of boys and girls you must understand the equation needed.
The total number of girls plus boys is indicated as 29 students.
You then have to understand that there are "4 less than twice the number of boys". To start, add 4...

I have been tutoring for about a little over a month now and I have come across students asking me how science is important in their world? At first I was not sure how to answer the question, and then I started looking around me and found the answer.
Science is in everything. The electricity I am using right now to type on this computer, see with my light bulbs, and be cool...
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In order to add the two you must convert both to a common denominator in this case 6 (2*3=6)
To convert 2 and 1/2:
2= 12/6 and 1/2= 3/6 so 2 1/2= 12/6+3/6= 15/6
To convert 4 2/3:
4= 24/6 and 2/3= 4/6 so 4 2/3= 28/6
Once converted all you have to do is add then up!
15/6...