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Виолетта2811
@Виолетта2811
July 2022
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Azzaires
8х + 2 = 3х - 18
8х - 3х = - 18 - 2
5х = - 20
х = - 4
2 (х - 3) - 5 (х - 7) = 5 (х + 6)
2х - 6 - 5х + 35 = 5х + 30
2х - 5х - 5х = 30 - 35 + 6
- 8х = 1
х = - 1/8
| * 42
14х + 6 (х + 1) = 7 (х - 2)
14х + 6х + 6 = 7х - 14
14х + 6х - 7х = - 14 - 6
13х = - 20
х = - 20/13
х = - 1 7/20
х = - 1,35
2 votes
Thanks 1
Lesben
8x+2=3x-18
8x-3x=-18-2
5x=-20
x=-20/4
x=-5
=========
x/3 + (x+1)/7 =(x-2)/6 /.42
14x+6x+6=7x-14
20x+6=7x-14
20x-7x=-14-6
13x=-20
x=-20/13
==========
2(x-3)-5(x-7)=5-(x+6)
2x-6-5x+35=5-x-6
-3x+29=-1-x
-3x+x=-1-29
-2x=-30
x=15
======
1 votes
Thanks 1
Lesben
1) x=-20/5, x=-4
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Answers & Comments
8х - 3х = - 18 - 2
5х = - 20
х = - 4
2 (х - 3) - 5 (х - 7) = 5 (х + 6)
2х - 6 - 5х + 35 = 5х + 30
2х - 5х - 5х = 30 - 35 + 6
- 8х = 1
х = - 1/8
14х + 6 (х + 1) = 7 (х - 2)
14х + 6х + 6 = 7х - 14
14х + 6х - 7х = - 14 - 6
13х = - 20
х = - 20/13
х = - 1 7/20
х = - 1,35
8x-3x=-18-2
5x=-20
x=-20/4
x=-5
=========
x/3 + (x+1)/7 =(x-2)/6 /.42
14x+6x+6=7x-14
20x+6=7x-14
20x-7x=-14-6
13x=-20
x=-20/13
==========
2(x-3)-5(x-7)=5-(x+6)
2x-6-5x+35=5-x-6
-3x+29=-1-x
-3x+x=-1-29
-2x=-30
x=15
======