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3/a - 1/b. = 6
------------------- +
5/a..........= 10
a = 5/10 =1/2
Masukkan kepersamaan 1.
2/a + 1/b = 4
2/1/2 + b =. 4
2: 1/2 + b =. 4
2 x 2/1 + b =. 4
4 + b =. 4
b = - 4