Solve for X: -25-42÷x+18×2÷4=-23 Order of Operations Challenge

Question

How much is x equal to?

2542 ⁣:x+18×2 ⁣:4=23 -25-42\colon x+18\times2\colon4=-23

Video Solution

Solution Steps

00:00 Solve
00:03 We'll solve according to the correct order of operations, one operation at a time
00:07 We'll write division as a fraction
00:11 Always solve multiplication and division before addition and subtraction
00:33 Let's isolate the unknown X
00:46 We'll solve from left to right
01:05 We'll multiply by X to eliminate it from the denominator
01:12 Let's isolate the unknown X
01:20 And this is the solution to the question

Step-by-Step Solution

We begin by placing the multiplication exercise inside of parentheses:

2542 ⁣:x+(18×2) ⁣:4=23 -25-42\colon x+(18\times2)\colon4=-23

2542 ⁣:x+36 ⁣:4=23 -25-42\colon x+36\colon4=-23

We will then place the division exercise inside of parentheses:

2542 ⁣:x+(36 ⁣:4)=23 -25-42\colon x+(36\colon4)=-23

2542 ⁣:x+9=23 -25-42\colon x+9=-23

Next we rearrange the exercise in order to simplify it:

25+942 ⁣:x=23 -25+9-42\colon x=-23

(25+9)42 ⁣:x=23 (-25+9)-42\colon x=-23

We then solve the exercise inside of the parenthesis and obtain the following:

1642 ⁣:x=23 -16-42\colon x=-23

We rearrange the fractions and obtain the following:

42 ⁣:x=23+16 -42\colon x=-23+16

42 ⁣:x=7 -42\colon x=-7

We multiply by x and obtain the following:

42=7x -42=-7x

Lastly we divide by negative 7:

x=427=6 x=\frac{-42}{-7}=6

Answer

6