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пSiхОdИчКа
@пSiхОdИчКа
July 2022
2
5
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Решите уравнения:
а)3х=28-х;
б)6х-19=-х-10;
в)5х+12=8х+30;
г)7-2х=3х-18;
д)33+8х=-5х+72;
е)2х+9=2х-4.
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Answers & Comments
darkhan91kz
Verified answer
А.4x=28
x=7
б.7x=9
x=9/7
в.-3x=18
x=-6
г.-5x=-25
x=5
д.13x=39
x=3
e.решения нет
4 votes
Thanks 5
jekadva
Verified answer
а)3х=28-х
3x+x=28
4x=28
x=28:4
x=7
б)6х-19=-х-10;
6x+x=-10+19
7x=9
x=9:7
x=1 2/7
в)5х+12=8х+30;
5x-8x=30-12
-3x=18
x=18:(-3)
x=-6
г)7-2х=3х-18;
-2x-3x=-18-7
-5x=-25
x=-25:(-5)
x=5
д)33+8х=-5х+72;
8x+5x=72-33
13x=39
x=39:13
x=3
е)2х+9=2х-4.
2x-2x=-4-9
8 votes
Thanks 10
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Answers & Comments
Verified answer
А.4x=28x=7
б.7x=9
x=9/7
в.-3x=18
x=-6
г.-5x=-25
x=5
д.13x=39
x=3
e.решения нет
Verified answer
а)3х=28-х3x+x=28
4x=28
x=28:4
x=7
б)6х-19=-х-10;
6x+x=-10+19
7x=9
x=9:7
x=1 2/7
в)5х+12=8х+30;
5x-8x=30-12
-3x=18
x=18:(-3)
x=-6
г)7-2х=3х-18;
-2x-3x=-18-7
-5x=-25
x=-25:(-5)
x=5
д)33+8х=-5х+72;
8x+5x=72-33
13x=39
x=39:13
x=3
е)2х+9=2х-4.
2x-2x=-4-9