Question 847497: 1/3 + 1/8 =
Answer by swincher4391(1107)   (Show Source):
You can put this solution on YOUR website! I will do this two different ways.
The common way is to find a common denominator:
What is the common denominator for 3 and 8?
Look at the multiples of 3 and 8
3,6,9,12,15,18,21,24,27,30
8,16,24
We find that 24 is the first common multiple, so it must be it.
So, we convert each fraction into a denominator of 24.
So adding this together gives us 11/24.
METHOD 2(cross multiply)
1/3 + 1/8
Start in the left corner and multiply by it with its diagonal
1*8 = 8
Take the other diagonal and multiply together
3*1 = 3
Add those two together to get our numerator.
8+3 = 11
Take the denominators and multiply them together
3*8 = 24
So our answer is (8+3)/24 = 11/24
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