15
3
12/3 + 1 = 5
3/4 + 3/12 = 9/12+3/12 = 1
To get the right answer. If you add 1/3 and 1/4, you might not be as successful as when you add 4/12 and 3/12.
To get the right answer. If you add 1/3 and 1/4, you might not be as successful as when you add 4/12 and 3/12.
x - 12 = 3 Add '12' to both sides x = 3 + 12 x = 15
45
-9
To add two fractions, find a common denominator. In this case, it's 12. The 2/3 = 8/12, and the 1/4 = 3/12 so we're ready to add. 8/12 + 3/12 = 8 + 3 over 12 which equals 11/12.
19
If you need to add 1/3 and 1/4, both can be converted into equivalent fractions using 12 as the common denominator. 1/3 is multiplied by 4/4 to get 4/12. 1/4 is multiplied by 3/3 to get 3/12. Add them, 4/12 + 3/12 = 7/12.
-7