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menillo menillo
  • 26-02-2017
  • Mathematics
Answered

8.5x + 12y=1656 where x+y=152

Verified Answer :

earobinson earobinson
  • 26-02-2017

Rearrange x+y=152 for either x or y and then substitute that new equation into 8.5x + 12y = 1656 and solve.

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sdmatera
sdmatera sdmatera
  • 26-02-2017

You can also elimination by multiplying the second equation by 12 in order to subtract the y's and get 3.5x=168, so x=48. Then you plug into the original to get y=152-48 or 104

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