To solve this, we need to find the least common denominator between the 2 fractions, then simply add the numerators. The least common denominator is the value at which both fractions have the same denominator and only whole numbers.
In this case, 4 is our least common denominator, so we should multiply the numerator and denominator of 1/2 by 2 so that we have 4 as our denominator (and 2 as our numerator).
Now, our problem is 3/4+2/4. We just need to add the numerators. When we do this, we will get 5/4.
Therefore, 3/4+1/2 equals 5/4 or 1 1/4.