Basic math problem
Good morning everyone.
I must first say that I am glad I found this website! There's a lot of good info here. I have a basic math problem that I can not solve.
1/16 - 3/4 + 15/8 =
Please note that the numbers above are fractions. The answer is 19/16. I had to cheat and look at the back of the book to get the answer. I still do not know how they came up with this. I've been trying to do this problem for the past 30 min. I know that the order of operation is PEMDAS:
Multiplication (left to right)
Division (left to right)
Addition (left to right)
Subtraction (left to right)
So from the order of operations, I would need to add 3/4 + 15/8 right? And what ever answer I get from there, add 1/16?
Any help would be appreciated.
In school we were taught BODMAS, which i think is similar to PEMDAS
Anyway, what you need to do is find a common denominator for all three fraction, which in this case is 16. and make all three fractions the same with the common denominator,
1/16 will remain 1/16
3/4 will become 12/16 (multiply top and bottom by 4)
15/8 will become 30/16 (multiply top and bottom by 2)
Then apply BODMAS, so addition first and then subtraction.
so - 12/16 + 30/16 = 18/16 (dont forget the minus sign infront of the 12)
1/16 + 18/16 = 19/16
I hope that makes sense
Thank you. 1-12+30 = -11+30= 19
I was doing... 1-12+30 = 11+30 = 40