2/5 × -3/7 -1/4 -3/7 ×3/5 using laws
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2/5*-3/7-1/4-3/7*3/5
=-15*14/35-1/4--15*21/35
=-15*14/35 +15*21/35plus minus cancelled out
=1/4
abcde1623:
is it correct
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