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