Question

-1upon2+2upon3+4upon5​

Answer 1

-1/2+2/3+4/5

-30+20+24/30

-30+44/30

14/30

7/15

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Answer 2

Answer:

-1/2 + 2/3 + 4/5

= [(-1×3×5)+(2×2×5)+(4×3×2)] / (2×3×5)

= ( -15 + 20 + 24 ) / 30

= 29/30