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Вопросы по математик

Линейные уравнения

QuestionAnswer
2x+10=0 -5
3x+5=3x-4 корней нет
-3x+1.2=0 0.4
|x|+1=8 x=7, x=-7
Рост мальчика 75 см и еще половина его роста. Каков рост мальчика? 150cm
По электронной почте послано три сообщения общим объемом 600 килобайт. Объем первого сообщения на 300 килобайт меньше объема третьего и в 3 раза меньше объема второго. Найдите объем каждого сообщения. 60 Кб, 180 Кб, 360 Кб
Число увеличили на 15%, затем результат увеличили еще на 10%, в результате чего получили числа на 630 больше исходного. Чему равно исходное число? исходное число 2520.
2х + 7 = 0 x=-3.5
х - 3 = 2 - 4х x=1
4(x+2)+12x=12-9x x=0.16
Created by: o.kayrat
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