Solve the equation.... #maths #education #learning #thinking #school #solution#learn #examination#yt

Added: 2026-05-17

[00:00:00]Let's look at the problem. Solve the equation 80 minus parentheses x plus two parentheses divided by three equals 76.

[00:00:08]We're supposed to find what x equals.

[00:00:11]For this problem, when we solve the equation, the first step is What should we do first? We should first write solution. Let's write the word solution at the beginning.

[00:00:23]So, if we follow the normal order of operations, we should divide first and then subtract. But right now, I don't know what x equals, so I can't calculate x plus two, and I still can't work out x plus two divided by three.

[00:00:38]That's why today we're going to learn a method called the whole method.

[00:00:45]What is the whole method? Everyone, pay close attention.

[00:00:49]The part I'm highlighting right now, that's the whole.

[00:00:53]80 minus this equals 76. So, how should we calculate this whole part? We should use 80.

[00:01:03]Subtract 76.

[00:01:05]All right, let's fill in the left side properly.

[00:01:09]80 minus 76 equals four. Write that down.

[00:01:15]Okay, next. Let's continue using the whole method. Now, I treat this as a whole. So, what divided by three equals four? How should I calculate this?

[00:01:24]I should use four times three, right?

[00:01:26]Okay, let's continue.

[00:01:28]Write out the entire process.

[00:01:32]Now, if we take four times three, that equals 12, which means that x plus two must also equal 12. Next, in order to find the value of x, isn't it just a matter of subtracting the addend two from the total sum to isolate x?

[00:01:49]So, we can say that x equals 12 minus two.

[00:01:53]Yes, that's right. 12 minus two is exactly 10. So, we have successfully found the final value of X.