faith51 faith51

22-11-2016
Mathematics

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2 times the sum of a number and 4 is no more than three times the sum of a number and 7 decreased by 4

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lborgen74 lborgen74

22-11-2016

[tex]2(x+4) \geq 3((x+7)-4) \\ 2x+8 \geq 3(x+7)-12 \\ 2x+8 \geq 3x+21-12 \\ 2x+8 \geq 3x+9 \\ 2x \geq 3x+1 \\ -x \geq 1 \\ x \leq -1[/tex]

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