diketahui ¼x + 1/6y = 4 dan ½x -⅔y=-2 nilai 3x-2-5 adalah

1/4x + 1/6y = 4 . 2
1/2x - 2/3y = -2 . 1
________________
1/2x + 1/3y = 8
1/2x - 2/3y = -2
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y = 10

1/2x + 1/3y = 8
1/2x + 1/3 (10) = 8
1/2x + 10/3 = 8
1/2x = 8 - 10/3
1/2x = 24/3 - 10/3
1/2x = 12/3
1/2x = 4
x = 8

3x-2-5
3 (8) - 2-5
24-2-5
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