Question

Adding and Subtracting with unlike denominators

Add or Subtract. Write answer in simplest form

Answer 1

I'm posting it one moment

Answer 2

\[\frac{ 3 }{ 5 } + \frac{ 2 }{ 7 }\]

Answer 3

you need a common denominator. so multiply both numbers by 1. \[(7/7)*(3/5)+(5/5)*(2/7)\]

Answer 4

Once the denominator is the same just add the numbers on top. \[= (21/35) + (10/35) = 31/35 \]

Answer 5

Does that make sense?

Answer 6

\[ \frac{ 31 }{ 35 }, \frac{ 1 }{ 7 }, \frac{ 5 }{ 7 }. \frac{ 6 }{ 35 } \]

Answer 7

Yes it makes lots of sense thank you

Answer 8

So you're correct

Answer 9

any other questions?

Answer 10

http://openstudy.com/study#/updates/5304f71ae4b024fe26e4448e