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12-03-2014
Mathematics

contestada

What is the answer to:
x + y = 4
Y= x+4
Using elimination

Respuesta :

12-03-2014

x + y = 4
y = x + 4

x + (x + 4) = 4
y = x + 4

2x + 4 = 4
y = x + 4

2x = 4 - 4
y = x + 4

x = 0
y = 0 + 4

x = 0
y = 4

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