Question

If you have a big brain then, solve it​

Answer 1

Answer:

Step-by-step explanation:

LHS

[3/4+(-2/5)]+(-7/10)

[15+(-8)/20]+(-7/10)

7/20+(-7/10)

7-14/20

-7/20

RHS

3/4+[(-2/5)+(-7/10)]

3/4+[(-4-7)/10]

3/4+(-11/10)

-22+15/20

-7/20

Therefore, LHS=RHS

hence verified

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Answer 2

pic attached contains answer

hope its correct and helps you