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5. Mark saved 15x + 8 from his allowance. How much did he have after buying
a gift worth 10x + 3 for his mother's birthday?
A. 5x - 5
B. 5x + 5
C. 5x - 11
D. 5x + 11​


Sagot :

Answer:

(15x + 8) - (10x + 3)

15x + 8 - 10x - 3

5x + 5

The answer is B. 5x + 5