3 1/3 - 2/3x - 1,7 = 3.9;
Найдем корень.
3 1/3 - 2/3х = 3,9+1,7;
3 1/3 - 2/3x = 5,6;
3 1/3 - 2/3x = 5 3/5;
-2/3x = 5-3-3/5-1/3;
-2/3x = 2-14/15;
-2/3x = 1 1/15;
x =-16/15 * 3/2;
x = --8/5.
3 1/3 - 2/3x - 1,7 = 3.9;
Найдем корень.
3 1/3 - 2/3х = 3,9+1,7;
3 1/3 - 2/3x = 5,6;
3 1/3 - 2/3x = 5 3/5;
-2/3x = 5-3-3/5-1/3;
-2/3x = 2-14/15;
-2/3x = 1 1/15;
x =-16/15 * 3/2;
x = --8/5.