Question: Since 3 + x = 9 , and 3 + 6 = 9 , that means x equals 6 . ( 1 ) The sum

Since 3+x=9, and 3+6=9, that means x equals 6.(1) The sum of twice a number, n, and 14 is 30. Write an equation that models this statement. Then explain how you might use reasoning to find the value of n.

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