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Seven less than twice a number is 12. 7 - 2n = 12 2n + 7 = 12 2n - 7 = 12 12 - 7 = 2n Twice a number less 3 is 9. 2n - 3 = 9 3 - 2n = 9 2n - 9 = 3 9 - 2n = 3 The sum of a number and 4 is 2. 4n = 2 n + 4 = 2 n - 4 = 2 n ÷ 4 = 2 The quotient of 7 and a number is 3. 7 ÷ n = 3 7n = 3 3n = 7 n ÷ 7 = 3 The difference of 7 and twice a number is 12. 2 - 7n = 12 7 = 2n - 12 2n - 7 = 12 7 - 2n = 12 |