Ответ:
x + 0,5*x= 1, 5 x 1, 5 x - 0,5 * 1, 5 x = 15x - 0 , 75x x- 0 , 75 x = 100 - 75 x = 25
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Ответ:
x + 0,5*x= 1, 5 x 1, 5 x - 0,5 * 1, 5 x = 15x - 0 , 75x x- 0 , 75 x = 100 - 75 x = 25