penyelesaian 2/3x-1/2y=6 dan 1/2x+1/4y

(2/3)x - (1/2)y = 6 *1/2
(1/2)x + (1/4)y = 0 *1
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(2/6)x - (1/4)y = 3
(1/2)x + (1/4)y = 0
----------------------------- +
(5/6)x = 3
x = 3 * 6/5
x = 18/5