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20-11-2016
Mathematics

contestada

Solve the following system of equations.

x + y = 12
x – y = 6

(9, 3)

no solution

infinite number of solutions

(3, 9)

Respuesta :

texaschic101 texaschic101

20-11-2016

x + y = 12
x - y = 6
---------------add
2x = 18
x = 18/2
x = 9

x + y= 12
9 + y = 12
y = 12 - 9
y = 3

solution is (9,3)

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