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Help please I really don’t understand due tomorrow

Help please I really don’t understand due tomorrow-example-1
User Klaudio
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2 Answers

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The answer and the working is in the image
User Aquiles Carattino
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Answer:

x≥21

Explanation:

1) Multiply both sides by the denominator (3)

x+21≥42

2)Move the constant to the right (21)

x≥42-21

3) Calculate it

x≥21

User Vietstone
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