A question about adding/subtracting fractions with different denominators

Question

How do you add 3/5 + 3/4?

Answer 1

When adding fractions with different denominators, there are a few steps you must take...

Step one: Find the factor that both denominators share - Both 5 and 4 share the factor twenty.

Step two: multiply the denominators by the factor that get you to the shared factor (5 x 4; 4 x 5 = 20)

Step three: multiply the numerators by the same factor (3 x 4 = 12; 3 x 5 = 15)

Step four: and the improper fractions 12/20 + 15/20 together, equaling 27/20

Step five: turn improper fraction 27/20 into a mixed fraction (1 7/20)

The end.

Answer 2

3/5 + 3/4

= 12/20 +15/20 = 27/20 = 135/100 = 1.35

= .6 + .75 = 1.35

2 methods, reduce to decimals or rewrite in common denominators