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3X is greater than or equal to -12 and 7X is greater than equal to 21
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3X is greater than or equal to -12 and 7X is greater than equal to 21

User Evolutionary High
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3x>=-12 and 7x>=21
3x/3>=-12/3

X>=-4

7x/7>=21/7

x>=3
User Brewal
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8.2k points
3 votes
3x >-12 and 7x >21

make sure you add the little lines under the inequality signs
User Wolfram Rittmeyer
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7.1k points
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