2/5×(-3/7)-1/4-3/7×3/5
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Answer:
2/5*-3/7-1/14-3/7*3/5
=(2/5) (-3/7)-1/14-(3/7)(3/5)
=-6/35-1/14-9/35
=(-12-5-18)/70,since LCM*35,14,35)=70
=-35/70
=-1/2
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