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  • 27-01-2016
  • Mathematics
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System of equations Y=10+2z y=38-5z

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Panoyin
Panoyin Panoyin
  • 27-01-2016
y = 2z + 10
y = -5z + 38

   2z + 10 = -5z + 38
+ 5z          + 5z
   7z + 10 = 38
         - 10  - 10
           7z = 28
            7      7
             z = 4
y = 2z + 10
y = 2(4) + 10
y = 8 + 10
y = 18
(z, y) = (4, 18)
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