TRUEBOSS72
TRUEBOSS72 TRUEBOSS72
  • 12-03-2018
  • Mathematics
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Please help me on this....

Please help me on this class=

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choixongdong
choixongdong choixongdong
  • 12-03-2018
8x + 4y = 16
x + 7y = 15
multiply second equation by (-8)
-8x - 56y = -120
so now
 8x + 4y = 16
-8x - 56y = -120
-----------------add
-52y = -104
y = 2


7(2) = 15 - x
14 = 15 - x
x = 1

answer is C. 
(1, 2)

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