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08-05-2020
Mathematics

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4. Solve each equation by inspection. Explain your thinking. a) 3n=33 b) 9+w=10 c) r-15=30 d) 2y+3=11

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08-05-2020

Step-by-step explanation:

A. 3n = 33

n = 33/ 3 = 11

B. 9 + w = 10

w = 10 - 9 = 1

C. r - 15 = 30

r = 30 + 15 = 45

D. 2y + 3 = 11

2y = 11 - 3

2y = 9

Y = 9/2

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