madmonee
madmonee
18-01-2017
Mathematics
contestada
what is x and y using substitution
Respuesta :
safinahashim7
safinahashim7
18-01-2017
x-5y=36
x+y=-26
y=-26-x
x-5(-26-x)=36
x+130+x=36
2x+130=36
2x=36-130
2x=-94
x=47
Answer Link
eric2952
eric2952
18-01-2017
x-5y= 36
2x+y=-16 from the first line, x=5y+36, then substitue for x below
2(5y+36) + y =-16 so 10y+72+y=-16, so 11y+72=-16, so 11y=-88 or y=-8
y=-8, put this in your equation and you get x+40=36 or x=-4,
so your answer is x=-4 and y=-8
Answer Link
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