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ladylandish
@ladylandish
August 2022
2
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19×(39-2x)=703
2(2x +3x)=20
12(x+9x)=1200
Reshite pojaluista podrobno
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Answers & Comments
ilyusha2145
19 * (39 - 2х) = 703
39 - 2х = 703 : 19
39 - 2х = 37
2х = 39 - 37
2х = 2
х = 1
--------------------------------
19 * (39 - 2 * 1) = 703
19 * (39 - 2) = 703
19 * 37 = 703
703 = 703
2 * (2х + 3х) = 20
2 * 5х = 20
5х = 20 : 2
5х = 10
х = 2
--------------------------------
2 * (2 * 2 + 3 * 2) = 20
2 * (4 + 6) = 20
2 * 10 = 20
20 = 20
12 * (х + 9х) = 1200
12 * 10х = 1200
10х = 1200 : 12
10х = 100
х = 10
-------------------------------------
12 * (10 + 9 * 10) = 1200
12 * (10 + 90) = 1200
12 * 100 = 1200
1200 = 1200
1 votes
Thanks 2
лиза2450
вы очень (умная) (умный)
лиза2450
у вас 8 спасибо
лиза2450
(восьмое я поставила)
лиза2450
мне очень понравился ваш ответ
Inf777
Verified answer
1) 741-38х=703
-38х=703-741
-38х=-38
Х=1
2) 4х+6х=20
10х=20
х=2
3)12х+108х=1200
120х=1200
х=10
2 votes
Thanks 3
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Answers & Comments
39 - 2х = 703 : 19
39 - 2х = 37
2х = 39 - 37
2х = 2
х = 1
--------------------------------
19 * (39 - 2 * 1) = 703
19 * (39 - 2) = 703
19 * 37 = 703
703 = 703
2 * (2х + 3х) = 20
2 * 5х = 20
5х = 20 : 2
5х = 10
х = 2
--------------------------------
2 * (2 * 2 + 3 * 2) = 20
2 * (4 + 6) = 20
2 * 10 = 20
20 = 20
12 * (х + 9х) = 1200
12 * 10х = 1200
10х = 1200 : 12
10х = 100
х = 10
-------------------------------------
12 * (10 + 9 * 10) = 1200
12 * (10 + 90) = 1200
12 * 100 = 1200
1200 = 1200
Verified answer
1) 741-38х=703-38х=703-741
-38х=-38
Х=1
2) 4х+6х=20
10х=20
х=2
3)12х+108х=1200
120х=1200
х=10