anonymous
  • anonymous
Solve: 2x + 36 + 40 = 180 52 128 88 92
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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whpalmer4
  • whpalmer4
Come on, you haven't had any time to try this before asking us.
whpalmer4
  • whpalmer4
Subtract 36 and 40 from both sides. What do you get?
anonymous
  • anonymous
idk ?

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whpalmer4
  • whpalmer4
What is 180 - 36 -40?
whpalmer4
  • whpalmer4
180 -40 ---- ???
anonymous
  • anonymous
140
whpalmer4
  • whpalmer4
140 -36 ---- ???
anonymous
  • anonymous
104
whpalmer4
  • whpalmer4
Right. so the right side of the equation will be 104. Left side:\[2x+36+40-36-40\]What does that equal?
anonymous
  • anonymous
72?
whpalmer4
  • whpalmer4
That's just 2x, right? We had \[2x+36+40 = 180\]We subtracted 36 and 40 from both sides: \[2x+36+40-36-40 = 180-36-40\] \[2x+\cancel{36}+\cancel{40}-\cancel{36}-\cancel{40} = 104\]\[2x=104\]Can you solve that for \(x\)?
anonymous
  • anonymous
no
whpalmer4
  • whpalmer4
No? What number, doubled, gives you 104?
anonymous
  • anonymous
i dont know
whpalmer4
  • whpalmer4
What number is half of 104?
anonymous
  • anonymous
i dont know omg
whpalmer4
  • whpalmer4
Can you divide 104 by 2?
whpalmer4
  • whpalmer4
If you had 4 quarters and 2 pennies, you would have 102 cents. How much would half of that be?
anonymous
  • anonymous
52
whpalmer4
  • whpalmer4
Right. \[2x = 104\]Divide both sides by 2 \[\frac{2x}{2} = \frac{104}{2}\]\[\frac{\cancel{2}x}{\cancel{2}} = 52\]\[x=52\]
anonymous
  • anonymous
so the answee is 52
whpalmer4
  • whpalmer4
Yes. Even though I gave you the wrong coin problem :-)
whpalmer4
  • whpalmer4
(should have been 4 quarters and 4 pennies = 104, 2 quarters and 2 pennies = 52, but you got the answer we needed)
texaschic101
  • texaschic101
such patience @whpalmer4 ......how do you do it ...lol

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