Question

find the sum ,
7/17 + 4/11 ?

Answer 1

Here, the LCD is going to be 17 X 11 because those two numbers have no common factors (since they are both prime)

So you would have to multiply 7/17 X 11/11 and then multiply 4/11 X 17/17.

That would give you new fractions that have a common denominator.

77/187 + 68/187

Now, you add the numerators and keep the denominators the same to give you a final answer of

145/187

At this point you would try to simplify, but those numbers have no common factors, so that is the answer in simplest form. :)