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missnasnekras
@missnasnekras
July 2022
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решите уравнения
х:0,8=15:4
(5-у):4=3:8
Даю 19 баллов
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lena25073
Verified answer
Дх:0,8=15:4
4х=0,8*15
4х=12
х=12/4
х=3
5-у):4=3:8
(5-у)*8=4*3
40-8у=12
40-12=8у
8у=28
у=28/8
у=7/2 или 3,5
6 votes
Thanks 5
MrDan4es
Если подставить y = 1 в уравнение, получается
MrDan4es
4/4=3/8
love67
Лена подставьте значение 2 в уравнение?? получится
MrDan4es
Verified answer
1.) x / 0.8 = 15 / 4
x = 15 * 0.8 / 4
x = 12 / 4
x = 3
2.) (5 - y) / 4 = 3 / 8
5 - y = 3 * 4 / 8
5 - y = 3 / 2
5 - y = 1.5
5 - 1.5 = y
y = 3.5
4 votes
Thanks 5
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Answers & Comments
Verified answer
Дх:0,8=15:44х=0,8*15
4х=12
х=12/4
х=3
5-у):4=3:8
(5-у)*8=4*3
40-8у=12
40-12=8у
8у=28
у=28/8
у=7/2 или 3,5
Verified answer
1.) x / 0.8 = 15 / 4x = 15 * 0.8 / 4
x = 12 / 4
x = 3
2.) (5 - y) / 4 = 3 / 8
5 - y = 3 * 4 / 8
5 - y = 3 / 2
5 - y = 1.5
5 - 1.5 = y
y = 3.5