SOLUTION: 8 2/3 10 + 9 2/7 i understand the lcd is 21, and i converted these fractions using the lcd, but my answer is never right!!

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: 8 2/3 10 + 9 2/7 i understand the lcd is 21, and i converted these fractions using the lcd, but my answer is never right!!      Log On


   

Question 913309: 8 2/3
10

+ 9 2/7
i understand the lcd is 21, and i converted these fractions using the lcd, but my answer is never right!!
Found 2 solutions by ewatrrr, MathLover1:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
8 2/3
10
9 2/7
.......
26/3 + 10 + 65/7 = %2826%2A7+%2B+10%2A21+%2B+3%2A65%29%2F21 = 587/21 = 27 20/21
NOte: 587/21 = 27.952.... 27%2A21+=+567

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

first, 8+2%2F3=8%2B+2%2F3=8%2A3%2F3%2B2%2F3=24%2F3%2B2%2F3=26%2F3

9+2%2F7 =9%2B+2%2F7=9%2A7%2F7%2B2%2F7=63%2F7%2B2%2F7=65%2F7 and 10=70%2F7
so, you have
+26%2F3+%2B+70%2F7+%2B+65%2F7
=%2826%2A7%29%2F%283%2A7%29+%2B+%2870%2A3%29%2F%283%2A7%29+%2B+%2865%2A3%29%2F%287%2A3%29
=182%2F21+%2B+210%2F21+%2B+195%2F21
=%28182+%2B+210+%2B+195%29%2F21
=587%2F21
=27%2B20%2F21 or
27+20%2F21