We can't add two fractions with different denominators. So you need to get a common denominator. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.
So we multiply 4 by 3, and get 12.
Then we multiply 1 by 5, and get 5.
Next we give both terms new denominators -- 5 × 3 = 15.
So now our fractions look like this:
12/15 + 5/15
Step 2
Since our denominators match, we can add the numerators.
12 + 5 = 17
So the answer is:
17/15
2. 8/8 or 1
Since our denominators match, we can add the numerators.
Answers & Comments
Answer:
1 2/15
1 (whole)
Answer:
1. 17/15
Step 1
We can't add two fractions with different denominators. So you need to get a common denominator. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.
So we multiply 4 by 3, and get 12.
Then we multiply 1 by 5, and get 5.
Next we give both terms new denominators -- 5 × 3 = 15.
So now our fractions look like this:
12/15 + 5/15
Step 2
Since our denominators match, we can add the numerators.
12 + 5 = 17
So the answer is:
17/15
2. 8/8 or 1
Since our denominators match, we can add the numerators.
5 + 3 = 8
So the answer is:
8/8 or 1