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ozzi
3 years ago
6

Marcie solved the following inequality, and her work is shown below:

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
8 0

Answer:

She forgot to flip the inequality when dividing by a negative

Step-by-step explanation:

−2(x − 5) − 12 ≤ 4 + 6(x + 3)

Distribute the -2 and the 6

-2x+10 -12 ≤ 4 + 6x + 18

Combine like terms

-2x-2 ≤  6x+22

Subtract 6x from each side

-2x-6x-2 ≤  6x-6x+22

-8x-2 ≤ +22

Add 2 to each side

-8x-2+2 ≤ +22+2

−8x ≤ 24

Divide by -3.  Remember when multiplying or dividing by a negative to flip the inequality

-8x/-8 ≥ 24/-8

x≥-3


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