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татка19721
@татка19721
July 2022
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решите уравнение: |х|+4=7; 2|х+6=30; |х|-8=3; |4х-7|+6=11:
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yellok
Verified answer
|x|+4=7
|x|=3 ⇒ x=3 или x= -3
2|x+6|=30
|x+6|=15
x+6=15 или x+6= -15 ⇒ x=9
или x= -21
|x|-8=3
|x|=11
⇒ x=11
или x= -11
|4x-7|+6=11
|4x-7|=5
⇒
4x-7=5 или 4x-7= -5 ⇒ 4x= 12 или 4x=2 ⇒ x=3
или x=0.5
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Answers & Comments
Verified answer
|x|+4=7|x|=3 ⇒ x=3 или x= -3
2|x+6|=30
|x+6|=15
x+6=15 или x+6= -15 ⇒ x=9 или x= -21
|x|-8=3
|x|=11 ⇒ x=11 или x= -11
|4x-7|+6=11
|4x-7|=5 ⇒
4x-7=5 или 4x-7= -5 ⇒ 4x= 12 или 4x=2 ⇒ x=3 или x=0.5