-2/5*3/4+5/7*-3/4*1/5
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-2/5×3/4 + 5/7×(-3/4)(1/5)
→ -3/10 + 5/7(-3/20)
→ -3/10 + (-15/140)
→ -3/10 -15/140
→ -3/10×14/14 - 15/140
→ -42/140-15/140
→ (-42-15)/140
→ -57/140
hope it helps
→ -3/10 + 5/7(-3/20)
→ -3/10 + (-15/140)
→ -3/10 -15/140
→ -3/10×14/14 - 15/140
→ -42/140-15/140
→ (-42-15)/140
→ -57/140
hope it helps
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