(0.9x + 4.55) * 0.3 = 1.5;
0.9x + 4.55 = 1.5 : 0.3;
0.9x + 4.55 = 5;
0.9x = 5 - 4.55;
0.9x = 0.45;
x = 0.5.
(0.9x + 4.55) * 0.3 = 1.5;
0.9x + 4.55 = 1.5 : 0.3;
0.9x + 4.55 = 5;
0.9x = 5 - 4.55;
0.9x = 0.45;
x = 0.5.