Question

Solve only this!!

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Answer 1

Explanation:

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2/5+ (-3/7)+ (-7/10)

2×14 + ( -3× 10)/ 70 + (-7/10)

28+ (-30)/70 + (-7/10)

-2/70+ (-7/10)

-1/35 + (-7/10)

-1×2 + (-7×7)/ 70

-2+(-49)/70

-51/70

Another Case:-

2/5+ [(-3/7)+ (-7/10)]

2/5+ [(-3×10)+(-7×7)/70]

2/5+[ (-30)+(-49)/70]

2/5+[ -79/70]

28+ (-79)/70

-51/70

The equation satisfied.

Hope it will help you

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Answer 2

Explanation:

Hyy.....

(2/5-3/7)+(-7/10)=2/5+[-3/7+(-7/10)]

(2/5-3/7)-7/10=2/5+[-3/7-7/10]

(14-15/35)-7/10=2/5+[-30-49/70]

1/35-7/10=2/5-79/70

-10-245/350=140-395

-255=-255

Hope it will help you!!!!!