Question

(-3/5+1/6)+9/10=-3/5+(1/6+9/10)

Answer 1

From the question,

(-3/5+1/6) + 9/10 = -3/5 + (1/6+9/10)

{(-18+5)/30} + 9/10 = -3/5 + {(5+27)/30}

-13/30 + 9/10 = -3/5 + 32/30

(-13+27)/30 = (-18+32)/30

14/30 = 14/30

7/15 = 7/15

Hence proved ......

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