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11-12-2019
Mathematics

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d/1.6+31=40

1/2b-16= -4

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Yang100 Yang100

14-12-2019

Answer:

Step-by-step explanation:

d/1.6+31=40

d/1.6=40-31

d/1.6=9

d=9*1.6

d=14.4

Answer: d=14.4

------------------------

1/2b-16=-4

1/2b=-4+16

1/2b=12

b=12/(1/2)

b=(12/1)(2/1)

b=24/1

b=24

Answer: b=24

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