First you need to find the equivalent fractions with a common denominator.
Then you subtract the negative number from the positive number.
I'll be glad to check your answer.
how do you add a negetive and a positive faction? -5/8 + 2/9 = ?
5 answers
I came out with a common denominator of 72.
do I just put -5/72 + 2/72 = -3/72? I haven't done Algeria in 50 years. I am very rusty.
do I just put -5/72 + 2/72 = -3/72? I haven't done Algeria in 50 years. I am very rusty.
You're on the right track.
But -- you need to multiply the numerator by the multiple of the denominator to get the equivalent fraction.
72 divided by 8 = 9
9 times 5 = 45
-5/8 = -45/72
2/9 = 16/72
16/72 - 45/72 = -29/72
But -- you need to multiply the numerator by the multiple of the denominator to get the equivalent fraction.
72 divided by 8 = 9
9 times 5 = 45
-5/8 = -45/72
2/9 = 16/72
16/72 - 45/72 = -29/72
Thank you Sue! My daughter says she thinks she has it now. I hope she does, because I am till confused. You know its true what they say, It's hard to teach an old dog new tricks. Thanks again, Dean
You're very welcome.
I understand you. But hang in there. I'm 76 and am still learning.
I understand you. But hang in there. I'm 76 and am still learning.