Question

rezolvati in Q urmatoarele ecuatii:
$a. \: | \frac{x}{6} - \frac{2}{3} | + \frac{2}{3} = 3 \\ \\ b. \: - 7 |x + 3| = 5 |x + 3| - 6$
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Answer 1

Răspuns:

Explicație pas cu pas:

b)

12|x+3|=6

|x+3|=1/2

x+3=1/2.....x =2,5∈Q

x+3=-1/2....x=-3,5∈Q

a)|x-4|/6=3-2/3

|x-4|/6=7/3

|x-4|=14

x-4=14....x=18 ∈Z⊂Q

x-4=-14....x=-10 ∈Z⊂Q