05-06-2018
Mathematics

contestada

Translate into a variable expression. Then simplify.

two less than twice the sum of a number n and nine

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mkryukova19 mkryukova19

05-06-2018

The sum of a number n and nine is (n+9),
twice the sum of a number n and nine is 2(n+9),
two less than twice the sum of a number n and nine is 2(n+9)-2.

2(n+9)-2 = 2n+18-2=2n+16

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