19. 5.50-1.25=4.25
21. y = -9
Answer:
Step-by-step explanation:
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Answer: 4/5 of 45 is 36
Step-by-step explanation: If you were to divide 45 by 5 you would get 9. 9 is 1/5 of 45 so if you multiplied it by 4 you would 4/5 of 45 which is 36.