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Alina4500
@Alina4500
June 2022
1
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Решите уравнения:
а) 3икс+5=-4икс+19 б) икс+3(1-2икс)=23
в) 1/3-1=1/4(икс+4/5)
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jekadva
а)
3x+5=-4x+19
3x+4x=19-5
7x=14
x=14:7
x=2
б)
x+3(1-2x)=23
x+3-6x=23
-5x+3=23
-5x=23-3
-5x=20
x=20:(-5)
x=-4
в)
1/3-1=1/4(x+4/5)
-2/3=1/4x+1/5
1/4x=-2/3-1/5
1/4x=-13/15
x=-13/15*4/1
x=-52/15
x=-3 7/15
за (в) неручаюсь
2 votes
Thanks 4
Alina4500
Спасибо)
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Answers & Comments
3x+5=-4x+19
3x+4x=19-5
7x=14
x=14:7
x=2
б)
x+3(1-2x)=23
x+3-6x=23
-5x+3=23
-5x=23-3
-5x=20
x=20:(-5)
x=-4
в)
1/3-1=1/4(x+4/5)
-2/3=1/4x+1/5
1/4x=-2/3-1/5
1/4x=-13/15
x=-13/15*4/1
x=-52/15
x=-3 7/15
за (в) неручаюсь