wendy2712 wendy2712

26-03-2017
Mathematics

contestada

Solve by linear combination
2x-y=6
x+y=6
I need all the work please

Respuesta :

rarrininger rarrininger

29-03-2017

2x-y=6
x+y=6
-------------
3x = 12
3x/3 = 12/3
x = 4

x + y = 6
4 + y = 6
4-4 +y = 6 -4
y = 2

Check
2x - y = 6
2(4) - 2 = 6
8 - 2 =6
6=6

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