Решите уравнение: 1).( 1/3 +1/2)×х=3,75; 2). (3/5-0,25)×х=4,9; 3) (7/8-0,2)×х=8,1;

1)(1/3 + 1/2) × х = 3,75;(2 * 1 + 1 * 3)/6 * x = 3 75/100;(2 + 3)/6 * x = 3 3/4;5/6 * x = (3 * 4 + 3)/4;5/6 * x = (12 + 3)/4;5/6 * x = 15/4;1/3 * x = 3/2;2 * x = 3 * 3;x = 9/2;2) (3/5 - 0,25) × х = 4,9;(3/5 - 1/4) * x = 4,9;(12 - 5)/20 * x = 4,9;7 * x = 49;x = 7;3) (7/8 - 0,2) × х = 8,1;(7/8 - 1/5) * x = 8,1;(35 - 8)/40 * x = 8,1;27/40 * x = 8,1;3/40 * x = 0,9;3 * x = 3,6;x = 1,2.