Maybe 1 in 10 People Can Solve This Math Problem

Añadido: 2026-05-11

[00:00:00]Hey guys, welcome to this video. In this video, we want to find the value of this expression. 1 - 9 * 1 - 9. Are you ready to solve? Let's go ahead and get started. 1 - 9 gives us -8.

[00:00:17]And again here inside this parenthesis, we have 1 - 9.

[00:00:24]So -8 * -8 which equals positive 64.

[00:00:35]But [snorts] this answer is not correct because according to the order of operations which is PEMD does P stands for parenthesis. E stands for exponents. Mand stands for multiplication and division. and a and stands for addition and subtraction.

[00:00:57]First we have to do parenthesis then exponents then multiplication or division and the finally addition or subtraction. Remember that multiplication and division have equal priority and we have to work from left to right and the same applies to addition and subtraction.

[00:01:17]In this expression we have one subtraction, one multiplication and the one parenthesis. Inside this parenthesis we have one subtraction.

[00:01:26]Here we have a multiplication because in mathematics when a number is placed next two parenthesis it means multiplication and we usually don't write the multiplication sign for brevity. Okay.

[00:01:39]So according to the PEMDAS first we have to do this parenthesis then this multiplication and finally this subtraction. If we do this subtraction before this multiplication or this parenthesis it is wrong.

[00:02:03]So first we have to do this parenthesis.

[00:02:07]Inside this parenthesis we have 1 - 9 which equ=8.

[00:02:14]So we have 1 - 9 then times -8.

[00:02:23]In this expression we have one subtraction and one multiplication.

[00:02:28]According to the pendas multiplication has higher priority than subtraction because multiplication comes before subtraction.

[00:02:37]So here first we have to do this multiplication 9 * -8 gives us72.

[00:02:49]So we have 1 -72.

[00:02:55]Now * negative gives us positive.

[00:03:01]So we have 1 + 72 which equals 73.

[00:03:12]And this is our final answer to this problem.

[00:03:17]The correct answer is 73.