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4. If two times a number increased by 5 equals 9, then find the number


Sagot :

2x + 5 = 9
2x = 4, x = 2
Solution: the number is 2

Answer: x = 2

Step-by-step explanation:

Let x represent the unknown number:

2x + 5 = 9

Subtract 5 from both sides

2x = 4

Divide both sides by 2

x = 2