+3453 First, add 5 and 7 together.
$$5+7 = 12$$
Then, add 1/4 and 1/2 together.
$$\frac{1}{4} + \frac{1}{2}$$
The problem here is that we don't have a common denominator ( or common bottom number). To fix this, multiply the top and bottom of the second fraction by 2. We can do this as long as we do it to the top and bottom of the fraction.
$$\frac{1}{4} + \frac{1\times2}{2\times2}$$
$$\frac{1}{4} + \frac{2}{4}$$
Now we can add them together. Just add the tops together and keep the bottom number the same.
$$\frac{1+2}{4}$$
$$\frac{3}{4}$$
Finally, we add the two answers (12 and 3/4) together. We can't add them together evenly, so we write the answer as:
$$12\frac{3}{4}$$
+3453 First, add 5 and 7 together.
$$5+7 = 12$$
Then, add 1/4 and 1/2 together.
$$\frac{1}{4} + \frac{1}{2}$$
The problem here is that we don't have a common denominator ( or common bottom number). To fix this, multiply the top and bottom of the second fraction by 2. We can do this as long as we do it to the top and bottom of the fraction.
$$\frac{1}{4} + \frac{1\times2}{2\times2}$$
$$\frac{1}{4} + \frac{2}{4}$$
Now we can add them together. Just add the tops together and keep the bottom number the same.
$$\frac{1+2}{4}$$
$$\frac{3}{4}$$
Finally, we add the two answers (12 and 3/4) together. We can't add them together evenly, so we write the answer as:
$$12\frac{3}{4}$$
+8261 First, line them up.
5 $${\frac{{\mathtt{1}}}{{\mathtt{4}}}}$$
+ 7 $${\frac{{\mathtt{1}}}{{\mathtt{2}}}}$$
————
Now, make the fractions into the Lowest Common Denominator. Then, add.
5 $${\frac{{\mathtt{1}}}{{\mathtt{4}}}}$$
+ 7 $${\frac{{\mathtt{2}}}{{\mathtt{4}}}}$$
————
12 $${\frac{{\mathtt{3}}}{{\mathtt{4}}}}$$
So, $$12\frac{3}{4}$$ is the answer.
