SlenderKing SlenderKing

26-05-2017
Mathematics

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What 3 consecutive even numbers added together equal 42? Use the equation n + (n + 2) + (n + 4) = 42 to help you solve.

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angelicdragon12 angelicdragon12

26-05-2017

n+(n+2)+(n+4)=42
isolate n
n+(n+2)+(n+4)-(n+2)=42-(n+2) n+(n+4)=42-n-2 n+(n+4)=40-n
n+(n+4)-(n+4)=40-n-(n+4) n=40-n-n-4 n=36-2n
n+2n=40-2n+2n
3n/3=40/3
n=12

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