-0.2 * (x - 2) + 0.8 * (x - 4) = 0.1 * (x + 4) - 0.9 * (x + 2);
Раскроем скобки.
-0,2 * x + 0.4 + 0.8 * x - 3.2 = 0.1 * x + 0.4 - 0.9 * x - 1.8;
0.6 * x - 2.8 = -0.8 * x - 1.6;
0.6 * x + 0.8 * x = -1.6 + 2.8;
1.4 * x = 1.2;
x = 12/14;
x = 6/7.
-0.2 * (x - 2) + 0.8 * (x - 4) = 0.1 * (x + 4) - 0.9 * (x + 2);
Раскроем скобки.
-0,2 * x + 0.4 + 0.8 * x - 3.2 = 0.1 * x + 0.4 - 0.9 * x - 1.8;
0.6 * x - 2.8 = -0.8 * x - 1.6;
0.6 * x + 0.8 * x = -1.6 + 2.8;
1.4 * x = 1.2;
x = 12/14;
x = 6/7.