Question 230888
If a*b=ab+1 and a~b=a+b+1
what is the value of 4*[(6~8)~(3*5)]?


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Evaluate the parentheses:

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= 4*((6+8+1)~(15+1))

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Simplify:

= 4*[15~16)
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Evaluate the bracket:

= 4*(15+16+1)

= 4*32
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= 4*32+1

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= 129
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Cheers,
Stan H.