If a number is increased by 9, you would add 9 to the original number. For example, if the original number is x, the new number would be x + 9. This is an example of a simple algebraic expression where you are performing addition operations on variables and constants.
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The number is 9. 9 x 6 = 54 - 9 = 45.
30 divided by 6 = 5, plus 4 = 9.
Nine less than twice a number equals the same number increased by four?
2x + 9 = -17 2x = -26 x = -13
Suppose it is x. Then x + 1.6 = 9 Subtract 1.6 from both sides: x = 9 - 1.6 = 7.4