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samuel741
samuel741 samuel741
  • 22-02-2017
  • Mathematics
Answered

need help


9x + 7y = 10

7x + 7y = 14

Verified Answer :

charlottekrist
charlottekrist charlottekrist
  • 22-02-2017
  1. Solve for x in 9x+7y=10
    X=(10-7y)/(9)
    2. Substitute than into 7x+7y=14
    7(10-7y)/9+7y=14
    3. Solve for y in 7(10-7y)/9+7y=14
    Y=4
    4. Substitute y into x=(10-7y)/9
    X=-2
    5. The answers
    X=-2
    Y=4


    Have a wonderful day, I hope it helped
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