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The sum of twice a number and 3 is equal to the sum of the number and 9
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The sum of twice a number and 3 is equal to the sum of the number and 9

User Greynes
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1 Answer

6 votes

n - the number

The equation:

2n + 3 = n + 9 |-3

2n = n + 6 |-n

n = 6

User Plditallo
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