himpunan penyelesaian dari ⅔y=x-1/6 dan 4y-x=19 adalah.... A. {(4,3¾)} B. {(4,5¾)} C. {(1,5)} D. {(5,6)}
Matematika
melmel19
Pertanyaan
himpunan penyelesaian dari ⅔y=x-1/6 dan 4y-x=19 adalah....
A. {(4,3¾)}
B. {(4,5¾)}
C. {(1,5)}
D. {(5,6)}
A. {(4,3¾)}
B. {(4,5¾)}
C. {(1,5)}
D. {(5,6)}
1 Jawaban
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1. Jawaban julietengel
2/3y = x - 1/6
4/6y = 6/6x - 1/6
4y = 6x - 1
4y - 6x = -1
4y - 6x = -1
4y - x = 19
_________-
5x = -20
x = -4
4y - x = 19
4y - (-4) = 19
4y + 4 = 19
4y = 19 - 4
4y = 15
y = 3 3/4
(x, y) = (-4, 3 3/4)