Using appropriate properties of rational numbers, find 3/7 x 1/5 - 2/7 -1/4 x 1/5
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3/7 x 1/5 -2/7 -1/4 x 1/5 hope its correct
=1/5 (3/7-1/4) - 2/7
=1/5 (12-5/28) - 2/7
=(1/5 x 7/28) -2/7
=7/140 -2/7
=7-40/140
=-33/140
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