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Dilnazundelle
@Dilnazundelle
August 2022
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Решите линейные уравнения с одной переменной
1)2х+17=22+3х
2)25-4х=12-5х
3)21х+45=17+14х
4)3,4х-4=4,8-х
5) 5-3х=2х-8
6)1,5х+8=3,1+16
Кто правильно решит полностью и подробно, ДАМ 40 БАЛЛОВ
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Answers & Comments
Queen546
1)2х-3х=22-17
х=-5
2)-4х+5х=12-25
х=-13
3)21х-14х=17-45
х=4
4)3х-2х=-5-8
х=-13
5)1,5х=-8+3.1+16
х=7,4
4 votes
Thanks 3
anna019010
1) 2х +17 = 22 + 3х
2х - 3х = 22 - 17
х = -5
2) 25 - 4х = 12 - 5х
-4х + 5х = 12 - 25
х = - 13
3)21х + 45 = 17 + 14х
21х - 14х = 17 - 45
7х = -28
х = -28 : 7 = - 4
4) 3,4х - 4 = 4,8 - х
3,4х - х = 4,8 + 4
2,4 х = 8,8
х = 8,8 : 2,4 = 88/10 : 24/10 = 88/10 * 10/24 = 22/6 = 3 4/6 = 3 2/3
5) 5 - 3х = 2х - 8
-3х - 2х = - 8 - 5
-5х = -13
х = 13 : 5 = 2 3/5
6) 1,5х + 8 = 3,1 + 16
1,5х = 3,1 + 16 - 8 = 19,1 - 8 = 11,1
х = 11,1 : 1,5 = 111/10 : 15/10 = 111/10 * 10/15 = 111/15 = 7 6/15 = 7 2/5
2 votes
Thanks 5
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Answers & Comments
х=-5
2)-4х+5х=12-25
х=-13
3)21х-14х=17-45
х=4
4)3х-2х=-5-8
х=-13
5)1,5х=-8+3.1+16
х=7,4
2х - 3х = 22 - 17
х = -5
2) 25 - 4х = 12 - 5х
-4х + 5х = 12 - 25
х = - 13
3)21х + 45 = 17 + 14х
21х - 14х = 17 - 45
7х = -28
х = -28 : 7 = - 4
4) 3,4х - 4 = 4,8 - х
3,4х - х = 4,8 + 4
2,4 х = 8,8
х = 8,8 : 2,4 = 88/10 : 24/10 = 88/10 * 10/24 = 22/6 = 3 4/6 = 3 2/3
5) 5 - 3х = 2х - 8
-3х - 2х = - 8 - 5
-5х = -13
х = 13 : 5 = 2 3/5
6) 1,5х + 8 = 3,1 + 16
1,5х = 3,1 + 16 - 8 = 19,1 - 8 = 11,1
х = 11,1 : 1,5 = 111/10 : 15/10 = 111/10 * 10/15 = 111/15 = 7 6/15 = 7 2/5