Answers

2015-08-15T10:02:55+08:00
[9(x)/4=1/1]4
9x=4
---  ---        x=4/9
9    9

[3/2 x 1(x)/3=1/1]6
9+2x=6
2x=6-9
2x=-3          x=-3/2 or x=-1 1/2
--- ----
2   2
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