Решите уравнение:
а) 10 * 8x = 2 * (−16) * 5;
б) 18 * (−x) * (−5) = 45 * (−3);
в) −15 * (−13x) = −26 * (−30);
г) −36 * 7x = 4 * (−63).
10 * 8x = 2 * (−16) * 5
10 * 8x = (−16) * 10
x = −2
18 * (−x) * (−5) = 45 * (−3)
18 * x * 5 = 45 * (−3)
18 * x = 9 * (−3)
2 * x = (−3)
−15 * (−13x) = −26 * (−30)
15 * 13x = 26 * 30
x = 2 * 2
x = 4
−36 * 7x = 4 * (−63)
−36 * x = 4 * (−9)
−36 * x = −36
x = 1