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Make Algebra Your Best Friend
Think back to your middle school or high school days. What subject did you hate the most? It could have been biology, chemistry or physics. However, for most people, that subject was algebra. A lot of people hated algebra. They couldn’t understand it. They thought it was very difficult. The truth is that algebra is very easy. It all depends on how you handle it. If you think algebra is the hardest thing in the world, then it will be very difficult for you to start. However, if you have the right attitude, you can easily succeed. The best way to learn algebra is to study examples given in textbooks. Then, having done that, invent your own problems and solve them using the examples as a guide.
2X+7=37, what is X? If you see this problem and don’t know how to fix x, you’ll be in trouble. You will have no idea what you have to do. The first thing you should do is look at the examples they give you in the manual. 3X+2=5, could be the example. Then they tell you that to find X you will have to subtract 2 from both sides (you always have to remove the digits from the letters by performing the inverse function, if they are added you have to subtract, if they are being multiplied you need to divide). Something like this: 3X+2-2=5-2. Then they will show you that the 2 on the left side (3X + 2) has magically disappeared. Textbooks like to play mind tricks on students. They probably won’t explain to you why the two are no longer there. However, I will. 3X+2-2=3X, because when you have: +2-2=0, so basically they can write: 3X+0, however, they have ink to buy, and omit the “+0 “All together saves them thousands of dollars. So now what you have is: 3X=3 (because 5-2=3, you knew that, right?). The book then goes on to tell you how to solve for X. You divide each side by 3 because 3 is multiplied by X. (3X/3=3/3). Again, the 3 on the left side cancel each other out (3X/3=X) and only X remains, on the left side. On the right side, 3 divided by 3 is 1 (3/3=1) So now, left side: X equals (=) sign in the middle, and 1 on the right is written like this: X=1. This is your final answer in this example.
So let’s calculate 2X+7=37. First, we’ll subtract 7 from both sides: 2X+7-7=37-7. Then it becomes 2X+0=30 (remember, writing “+0” wastes time and ink, so omit it) 2X=30. Now (let’s keep removing the numbers from the letters) we’re going to halve both sides. 2X/2=30/2. This will cancel the 2 on the left side and divide 30 into 2 on the right, leaving X = 15.
The main thing is to trust that you will get the right answer.
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