bjr
2/5 x 7/4 = 2x7/5x4 = 2x7/5x2x2 = 7/10
5/2 x 3/10= 5x3/2x10 = 5x3/2x5x2 = 3/4
19/4 x 6/5 = 19x6/4x5 = 19x3x2/2x2x5= 57/10
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bjr
2/5 x 7/4 = 2x7/5x4 = 2x7/5x2x2 = 7/10
5/2 x 3/10= 5x3/2x10 = 5x3/2x5x2 = 3/4
19/4 x 6/5 = 19x6/4x5 = 19x3x2/2x2x5= 57/10
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2/5*7/4=2*7/5*4 = 2*7/5*2*2 = 7/10