Решите уравнение: 1) 0,3x = 9; 2) −2x = 3; 3) 15x = 0.
0,3x = 9 $x = \frac{9}{0,3}$ $x = \frac{90}{3}$ $x = 30$
−2x = 3 $x = -\frac{3}{2}$ $x = -1\frac{1}{2}$ x = −1,5
15x = 0 $x = \frac{0}{15}$ x = 0
