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24-01-2017
Mathematics

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x = 1 + y
3x - 6y = -12
a. (-2,-1)
b. (2,3)

Respuesta :

texaschic101 texaschic101

24-01-2017

x = 1 + y......so sub 1 + y in for x in the other equation

3x - 6y = -12
3(1 + y) - 6y = -12
3 + 3y - 6y = -12
3y - 6y = -12 - 3
-3y = -15
y = -15/-3
y = 5

x = 1 + y
x = 1 + 5
x = 6

solution is (6,5)

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