. Write the right expression for Sum of predecessor and successor of 100 divided by 7.
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Answer:
(a-b)(a+b)=a^2-b^2
As we know that,
predecessor of 100=99
successor of 100=101
A/Q:
sum of predecessor & successor of 100 divided by 7
=99+101/7
=(100-1)(100+1)/7
=(100)^2-(1)^2/7 (using above identity)
=10000-1 /7
=9999 /7
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