himpunan penyelesaian dari 1/2× + 1/4 y = 2 dan 1/3× - y =1

[tex] \frac{1}{2}x+ \frac{1}{4}y=2 [/tex]
2x+y=8

[tex] \frac{1}{3}-y=1 [/tex]
x-3y=3

2x+y=8 kalikan 1⇒2x+y=8
x-3y=3 kalikan 2⇒ 2x-6y=6
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                                 7y=2
                                 [tex]y= \frac{2}{7} [/tex]
[tex] \frac{1}{3}x-y=1 [/tex]
[tex] \frac{1}{3}x- \frac{2}{7}=1 [/tex]
[tex] \frac{1}{3}x = \frac{9}{7} [/tex]
[tex]x= \frac{27}{7} [/tex]