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kuzy290374
@kuzy290374
July 2022
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Решите Пожалуйста!!!!!!!!
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maurer22
1) 2х - 30 = 0
2х = 30
х = 30:2
х = 15
2) 45 + 10х = 8х
10х - 8х = -45
2х = -45
х = -22,5
3) 8х + 1 + х = 22 - х
9х + х = 22 - 1
10х = 21
х = 2,1
4) 5 + 2(х+3) = 32
5 + 2х + 6 = 32
2х = 32 - 6 - 5
2х = 21
х = 10,5
5) 5(2х+4) - 3(5х-1) = 12
10х + 20 - 15х + 3 = 12
-5х = 12 - 3 - 20
-5х = -11
х = 2,2
6) х + 2(6-х) = 8 - 3(2х-2)
х + 12 - 2х = 8 - 6х + 6
х - 2х + 6х = 8 + 6 - 12
5х = 2
х = 0,4
Ответы в порядке возрастания: -22,5; 0,4; 2,1; 2,2; 10,5; 15
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Answers & Comments
2х = 30
х = 30:2
х = 15
2) 45 + 10х = 8х
10х - 8х = -45
2х = -45
х = -22,5
3) 8х + 1 + х = 22 - х
9х + х = 22 - 1
10х = 21
х = 2,1
4) 5 + 2(х+3) = 32
5 + 2х + 6 = 32
2х = 32 - 6 - 5
2х = 21
х = 10,5
5) 5(2х+4) - 3(5х-1) = 12
10х + 20 - 15х + 3 = 12
-5х = 12 - 3 - 20
-5х = -11
х = 2,2
6) х + 2(6-х) = 8 - 3(2х-2)
х + 12 - 2х = 8 - 6х + 6
х - 2х + 6х = 8 + 6 - 12
5х = 2
х = 0,4
Ответы в порядке возрастания: -22,5; 0,4; 2,1; 2,2; 10,5; 15