In order to add fractions you first need to make sure both fractions have the same denominator. If they don't have the same denominator like our example fraction doesn't, we need to convert them.
The least common denominator of 5 and 2 is 10 so we multiply both sides of the fraction 3/5 by its counterpart 2 and both sides of the fraction 1/2 by its counterpart 5. This gives us 6/10 + 5/10.
Notice counterpart does not always mean the denominator of the other fraction, it means the number that multiplied by the current denominator of your fraction will give you the least common denominator of both fractions.
Now we can easily add 6/10 + 5/10 to get 11/10.
(I copied my answer from my answer for another question that asked the same thing)
The question that you can ask yourself while reading in order to help you identify the main ideas is, what is the most important point the author wants me to understand. The correct answer would be option C. The main idea is considered as the most significant idea in a story or a paragraph. This sums up all of the other ideas that are being included in the story.
The answer is -3/4 because the slope of the line is negative and to get the answer find where the line crosses a number and count from one point to another
