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

How much is x equal to?

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

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Step-by-step video solution

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00:00 Solve the following problem
00:03 Solve according to the correct order of operations, one operation at a time
00:07 Write the division as a fraction
00:11 Solve the multiplication and division before addition and subtraction
00:33 Isolate the unknown X
00:46 Solve from left to right
01:05 Multiply by X to eliminate it from the denominator
01:12 Isolate the unknown X
01:20 This is the solution

Step-by-step written solution

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1

Understand the problem

How much is x equal to?

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

2

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

3

Final Answer

6

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\( 100+5-100+5 \)

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