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Artyom0805 [142]
3 years ago
6

What is the r in this equation. R+10x2

Mathematics
1 answer:
RideAnS [48]3 years ago
8 0
R+20x is the solution
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  x = 200

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Multiply by 4:

  x + 120 + 2x = 720

  3x = 600 . . . . . . collect terms, subtract 120

  x = 200 . . . . . . . divide by 3

_____

<em>Check</em>

  (200/4 +30) +(200/2) = 180

  (50 +30) + 100 = 180

  80 + 100 = 180 . . . . . true

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<em>Alternate solution</em>

If you like, you can simply work with the equation given.

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  x = 200 . . . . . . . . . . . . multiply by 4/3

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