a) 26.7×35.8
by
123.6+45
b) 869+123+745
by
9×5
c) 25642−7852
by
0.0258×9551

September 29, 2021

By Sadie

1 thought on “a) 26.7×35.8<br /> by<br /> 123.6+45<br /> b) 869+123+745<br /> by<br /> 9×5<br /> c) 25642−7852<br /> by<br /> 0.0258×9551<b”

1. Step-by-step explanation:

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   The given sets are:

   A={1,2,4,5}, B={2,3,5,6}, C={4,5,6,7}

   ∴ B∪C={2,3,4,5,6,7}

   A−(B∪C)={1}

   A−B={1,4}

   A−C={1,2}

   (A−B)∩(A−C)={1}

   we have to verify, A−(B∪C)=(A−B)∩(A−C)

   LHS=A−(A∪C)

   ={1}

   RHS=(A−B)∩(A−C)

   ={1}

   Hence, A−(B∪C)=(A−B)∩(A−C)

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