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3 years ago

6

Solve the system x-0.25y=11750 -0.20x + y=10000

1 answer:

Debora [2.8K]3 years ago

4 0

X - 0.25y = 11,750 ⇒ x - 0.25y = 11,750
-0.2x + y = 10,000 ⇒ <u>0.05x - 0.25y = -2,500</u>
   <u>0.95x</u> = <u>14,250</u>
      0.95   0.95
      x = 15,000
      x - 0.25y = 11,750
   15,000 - 0.25y = 11,750
      <u> - 15,000 - 15,000</u>
      <u>-0.25y</u> = <u>-3250</u>
       -0.25 -0.25
      y = 13,000
         (x, y) = (15,000, 13,000)

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