anonymous
  • anonymous
x-2/7=3 HELP!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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AndrewIsHere
  • AndrewIsHere
\[x-2\div7=3\]
AndrewIsHere
  • AndrewIsHere
Since this problem uses division, we will actually multiply to find our answer
AndrewIsHere
  • AndrewIsHere
We know the answer must equal 3 and that something divided by 7 must equal 3. So what is 7*3?

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AndrewIsHere
  • AndrewIsHere
Do you know?
anonymous
  • anonymous
its 21
anonymous
  • anonymous
7 x 3=21
AndrewIsHere
  • AndrewIsHere
Good. So 21/3 = 7. This is a correct statement. But there is more. We have to add 2 as the problem states that x (which we have determined is 21) must have 2 subtracted from it, THEN it is divided by 7. So we do the opposite of subtraction, which is addition. So 21 + 2 =
anonymous
  • anonymous
23
AndrewIsHere
  • AndrewIsHere
Perfect. So lets check. Plug in 23 for x: (23)-2/7 = 3 21/7 = 3 3 = 3
anonymous
  • anonymous
so whats the answer?
AndrewIsHere
  • AndrewIsHere
So x=23
AndrewIsHere
  • AndrewIsHere
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anonymous
  • anonymous
sorta but its not listed as one of my options

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