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The final answer would be three and three-eighths. Here's how to solve it mentally.
You have to set their denominators [bottom numbers] equal. So, keep seven eights, since two ["half"] goes into eight, but you must make 2 and a half into 2 and four eights, because four is half of eight. Pretend for a minute that the four eights isn't there. So, 2 and seven eights. Then, add one from the four eights, so that it will now be 3., and so that the four eights is now three eights. So, 3 and three eights.
Sorry. I'm not very good at explaining, but I hope that helped. ^^"
What else can I help you with?
What is 1 fourth plus 1 half plus 1 eighth?
Converting this to eights, it becomes: 2 eights + 4 eights + 1 eight = 7 eights.
What is the LCD for 2 eights and 1 half?
6 eights
What is six eights plus six eights equal?
12/8 or 1 and 1/2
What is one half of seven eights?
Expressed as a proper fraction in its simplest form, 1/2 x 7/8 = 7/16 or seven sixteenths. Expressed as a decimal, this is equal to 0.4375.
What is one half plus three eighths?
1/2+3/8=7/8 -lover of math geeks ;) the common denominator is eight, so one half is converted into four eights. Then, three eighths plus four eighths is seven eighthts, so your answer is seven eighths. - A math geek
