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What is 3 $ (2 $ 1) if A $ B = A * B - ( A + B)?

This question is part of SAT Math Questions
Asked by Wyatt Williams, Last updated: Sep 18, 2020

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2 Answers

John Adney

John Adney

John Adney
John Adney

Answered May 15, 2017

First you find out the value of (2$1) which is 2$1 = 21-(2+1)=-1.
Next you solve 3$-1=3(-1)-(3+(-1))=-5
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John Smith

John Smith

John Smith
John Smith

Answered Apr 07, 2017

-5

First, use the order of operations to find the parenthetical value of (2 $ 1), which is 21-3 or -1 Next, plug in -1 for (2 $ 1) to find 3 $ -1 = 3 -1 - (3 - 1) = -3 - 2 = -5
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