Ответы
3(7x - 5) - (17x + 4) = 17
21x - 15 - 17x- 4 = 17
21x - 17x = 17 + 15 + 4
4x = 36
x = 9
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3(7x - 5) - (17x + 4) = 17
21x - 15 - 17x- 4 = 17
21x - 17x = 17 + 15 + 4
4x = 36
x = 9