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Answer :

Answer:

b) x = 3

Step-by-step explanation:

7.5x - 2.5 = 20

7.5x - 2.5 + 2.5 = 20 + 2.5

7.5x = 22.5

[tex]\frac{7.5x}{7.5} = \frac{22.5}{7.5}[/tex]

x = 3

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