14-12-2016
Mathematics

contestada

2x+4y=22, 2x-2y=-8
solving systems using elimination. can you please solve and show your work

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14-12-2016

2x+4y=22
2x-2y=-8
......................subtract
6y = 30
y = 30/6
y = 5

2x+4y=22
2x+4(5)=22
2x + 20 = 22
2x =22 -20
2x = 2
x = 1

answer: x = 1 and y = 5

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