Mathematics
sun3han
2016-09-22 07:35:09
how to solve two variable system elimination 2x+6y=6 3x-2y=20
ANSWERS
Grace166
2016-09-22 09:30:08

hello :  2x+6y=6 ...(1) 3x-2y=20....(2) -6x -18y = -18...(3).......(multipy (1) by : -3) 6x -4y =40....(4)......(multipy (1) by : 2) (3) +(4) : -22 y =22 y = -1 subsct in (1) : 2x + 6(1) = 6 2x=0 x=0 the solution is : (0 , -1)

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