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asyasheva
@asyasheva
July 2022
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Помогите решить номер 100 ( в,г)
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coolpandaRF
В) 4z - 1.2(2 - 5z) = 1 - 5z
4z - 2.4 + 6z = 1 - 5z
4z + 6z + 5z = 1 + 2.4
15z = 3.4
z = 17/75
Ответ: z = 17/75
г) 2.5x - 1.7(5 - 2x) = 3x
2.5x - 8.5 + 3.4x = 3x
2.5x + 3.4x - 3x = 8.5
2.9x = 8.5
x = 85/29
x = 2 27/29
Ответ: x = 2 27/29
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Answers & Comments
4z - 2.4 + 6z = 1 - 5z
4z + 6z + 5z = 1 + 2.4
15z = 3.4
z = 17/75
Ответ: z = 17/75
г) 2.5x - 1.7(5 - 2x) = 3x
2.5x - 8.5 + 3.4x = 3x
2.5x + 3.4x - 3x = 8.5
2.9x = 8.5
x = 85/29
x = 2 27/29
Ответ: x = 2 27/29