Fractions are the basics of mathematics, and thus it becomes necessary for you to explain fraction basics. Many students just hate fractions although they are easy as add numbers. So, today I am going to teach you basics and guide you as for how to use them? At first, we solve simple fractions and then a little harder one. So, let’s begin our “subtracting fractions” tutorial.
What do you need to know about solving denominators?
There are certain rules and things about fractions which are must be in your knowledge. Well, here we discuss essential so that you can be able to solve any fraction without mistakes.
• Always take care about zero number in the numerator. It’s a very common mistake that students do as they multiple zero with other digits. For example, 0/4 then its answer is zero and not 4. Yes, in the case of the reverse fraction, its solution is 4.
• Always consider signs as they are important and let you to the right answer if used correctly. Always remember that, (-,-)=(-), (+,+)=(+), (-,+)=(-) and (-,+)=(-). Learn it as you have to use it further in the equation.
• Always make the digits in dominator same while solving the equation. If they are equal already, then it is easy to solve but if not then make it same. I know, this the toughest part of a fraction but it is easy as eating a pie.
• You should not have how to cancel number and have knowledge about common factors. Students do it incorrectly and thus never get right answers while subtracting fractions.
Step to solve it
Let’s learn it by solving an example 3/4 – 6/12. Here we have taken simple examples, but you still got its concept. So, let’s continue it:
Find the LCM of 4 and 12: remember what I have said earlier as make sure that denominators are the equal or of the same number. The LCM of them is twelve i.e. both of them are canceled by 4 & 3 which results in 12 when multiplied.
Now cancel 4 & 12 by each other: After finding LCM, you need to cancel four and twelve in the denominator by 4, and you will get 1 & 3.
Multiply 3 in the numerator by three by six by 1: Here is the way to solve it: 3 x3 – 6 x 1/12 =3/12. If you are confused here, then let me tell you that four are considered common number here. 4 is the only number which comes in the table of 4 &12. You have to choose a number which cancels both the number perfectly i.e. answers should not be in decimal. It should be a perfect number like 1, 2, 3……etc.
Last step: Now you need to solve 3/12 which answers to give 4. S, 4 is the answer to this equation and here its simplification completed.