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The sum of three times a number and -4 is at least twice the number plus 8
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The sum of three times a number and -4 is at least twice the number plus 8

User Henrietta
by
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2 Answers

3 votes

Answer:

12 ≤ x

Explanation:

3x-4 ≥ 2x+8

3x-3x-4 ≥ 2x-3x+8

-4-8 ≥ -1x+8-8

-12 ≥ -1x

You divide -1 on both sides and get...

12 ≤ x

Because you have to switch the sign around. I hope this helps!!

User Subin Thomas
by
6.2k points
5 votes

Answer:

x<=12

Explanation:

3x+(-4)<=2x+8

3x-4<=2x+8

3x-2x-4<=8

x-4<=8

x<=8+4

x<=12

User Bparry
by
6.5k points
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