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babunello [35]
3 years ago
9

No need for explanation

Mathematics
2 answers:
ra1l [238]3 years ago
7 0

Answer:

x=7

Step-by-step explanation:

AysviL [449]3 years ago
5 0

Answer:

x = 7

Step-by-step explanation:

x + 2x + 69 = 90

3x + 69 = 90

3x = 21

x = 7

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3 years ago
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7 0
3 years ago
a certain job can be done in 20 hours by 4 people. how many people are needed to do the same job in 10 hours?
maxonik [38]
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Glad I could help!
7 0
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