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mak2005rusBrain
@mak2005rusBrain
July 2022
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Помогите пж
а) 3х+|2х+1|=1
б) |5-2х|-2х=х+3
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Lesben
1)3x+/2x+1/=1
a)x≥-1/2, /2x+1/=2x+1
3x+2x+1=1
5x=0, x=0, 0≥-1/2
b)x≤-1/2, /2x+1/=-2x-1
3x-2x-1=1
x=2 net rešeniem
Otvet: x=0
2)/5-2x/-2x=x+3
a)x≤5/2, /5-2x/=5-2x
5-2x-2x=x+3
-5x=-2
x=2/5, 2/5≤5/2
b)x≥5/2, /5-2x/=-5+2x
-5+2x-2x=x+3
x=-8 net rešeniem
Otvet: x=2/5
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Answers & Comments
a)x≥-1/2, /2x+1/=2x+1
3x+2x+1=1
5x=0, x=0, 0≥-1/2
b)x≤-1/2, /2x+1/=-2x-1
3x-2x-1=1
x=2 net rešeniem
Otvet: x=0
2)/5-2x/-2x=x+3
a)x≤5/2, /5-2x/=5-2x
5-2x-2x=x+3
-5x=-2
x=2/5, 2/5≤5/2
b)x≥5/2, /5-2x/=-5+2x
-5+2x-2x=x+3
x=-8 net rešeniem
Otvet: x=2/5