jaysen2017
jaysen2017
31-05-2017
Mathematics
contestada
3x – 7y = 5
9y = 5x + 5
Respuesta :
fussellk
fussellk
31-05-2017
elmination method......
multiplied top by 5 and bottom by 3
15x - 35y = 25
-15x +27y = 15
-8y = 40
y = -5
plug -5 in.....
3x - 7(-5) = 5
3x +35 = 5
3x = -30
x = -10
(-10,-5)
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