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Кекунацц
@Кекунацц
July 2022
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Помогите)
0,7х - 1,82=0,8х +3,46
5(х+1,2)=12,5х
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prettypushkova
Verified answer
0,7х - 1,82 = 0,8х + 3,46
0,7х - 0,8х = 3,46 + 1,82
- 0,1х = 5,28
х = 5,28 : (-0,1)
х = - 52,8
Проверка: 0,7 * (-52,8) - 1,82 = 0,8 * (-52,8) + 3,46
- 38,78 = - 38,78
5(х + 1,2) = 12,5х
5х + 6 = 12,5х
5х - 12,5х = - 6
- 7,5х = - 6
х = - 6 : (-7,5)
х = 0,8
Проверка: 5(0,8 + 1,2) = 12,5 * 0,8
5 * 2 = 10
10 = 10
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Answers & Comments
Verified answer
0,7х - 1,82 = 0,8х + 3,460,7х - 0,8х = 3,46 + 1,82
- 0,1х = 5,28
х = 5,28 : (-0,1)
х = - 52,8
Проверка: 0,7 * (-52,8) - 1,82 = 0,8 * (-52,8) + 3,46
- 38,78 = - 38,78
5(х + 1,2) = 12,5х
5х + 6 = 12,5х
5х - 12,5х = - 6
- 7,5х = - 6
х = - 6 : (-7,5)
х = 0,8
Проверка: 5(0,8 + 1,2) = 12,5 * 0,8
5 * 2 = 10
10 = 10