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anonymous
 one year ago
Can someone help me solve this expression:
1520×5+–1=
anonymous
 one year ago
Can someone help me solve this expression: 1520×5+–1=

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hey again :D one sec.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Uh 920x, but if you are distributing then 9=20x = 2.222222222

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OH WAIT. lol i thought that "x" was a multiply symbol XD

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Is this the expression? \(\Large 15  20 \times (5) + (–1) = \)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0here is the math :P 1520x5+1 155+1=9 920x= +20x to both sides = 9=20x simple division leads us to 2.222222

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait no there aren't any parenthesis

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1You must follow the correct order of operations. Multiplications and divisions come before additions and subtractions.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0simple isolation of the variable right ?

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0\[15  20 \times (5) + (1)\] \[15 + 100 + (1)\] \[115 + (1)\] \[114\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Should I multiply 20×5 since its multiplication & following the order of pemdas ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But the 20 is negative

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0The x really means multiplying. You're not working with variables, I believe.

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0@Halia You're correct. It's 20 because of the minus sign.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0when you subtract a negative number it becomes positive though.

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0@Etrainx You need to work with PEMDAS and this states that multiplying is before subtracting. Thus, you need to do 20 times 5.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait so I multiped 20×5 and I got +100

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think these mathletes have it from here :P

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0Yes that's correct .

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1That means you must start with \(20 \times (5)\) \(\Large 15  \color{red}{20 \times (5)} + (–1) =\) \(\Large = 15  \color{red}{(100)} + (–1) \) Now we only have additions an subtractions, so we do them in the order they appear from left to right: \(\Large =15  (100) + (–1) \) \(\Large =15 + 100 1 \) \(\Large =115  1\) \(\Large =114\)

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0The work that I did but explained in a better way @mathstudent55

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0It's confusing, but just remember to take into consideration the sign (plus or minus) because that determines whether the following integer will be negative or positive.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Mkay I understand it now :) thanks guys I really appreciate it !!!

calculusxy
 one year ago
Best ResponseYou've already chosen the best response.0You're very welcome @Halia :)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Order of operations PEMDAS P  first do what is inside parentheses E  then do exponents MD  then do multiplications and divisions from left to right in the order they appear AS  finally do additions and subtractions in the order they appear from left to right
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