Quick Question regarding a simple algebra problem
"Given that A+B/B = 21, What is A/B?"
Answer = A/B = 20
in the explanation, it just does the math saying:
1. "A+B/B = 21"
2. "A/B + 1 = 21" therefore A/B = 20
My question is with A/B+1 = 21.
Where does the +1 come from? I know this is problably extremely elementary, but I'm having a mental block. Please provide step by step. thanks in advance!
well the way you wrote it down is not quite correct, you should have put brackets around A+B i.e. (A+B) / B
next you just divide both terms (A and B) by B which yields A/B + B/B =21; since B/B is 1 you are left with A/B + 1 = 21 and thus A/B = 20