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21-10-2016
Mathematics

contestada

Solve the system.
x = y + 11
2x + y = -2

A. (-13,2)
B. (0,-11)
C. (3,-8)
D. No solution

Respuesta :

21-10-2016

x = y + 11

2x + y = -2
2(y + 11) + y = -2
2y + 22 + y = -2
3y + 22 = -2
3y = -24
y = -8

x = y + 11
x = -8 + 11
x = 3

Solution set {3, -8} (C)

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