Ж)1/2x:5=16:0,8; з)0,2:(x-2)=1/2:2 1/2; и)2 2/3:0,24=1 7/9:(x+0,06);
Ж) 1/2*x : 5 = 16 / 0,8 | * 4 1/2*x * 0.8 = 16 * 5 0.8/2*x = 80 0.4 * x = 80 x = 200 з) 0.2 /(x - 2) = 1/2 : 2 1/2 0.2/(x - 2) = 1/2 : 5/2 0.2/ (x - 2) = 1/2 * 2/5 0.2 / (x - 2) = 1/5 0.2 = 0.2 * (x - 2) 0.2 + 2 * 0.2 = 0.2*x 0.6 = 0.2*x x = 3 и) 2 2/3 : 0.24 = 1 7/9 : (x + 0.06) 8/3 : 0.24 = 16/9 : (x + 0.06) 8/3 * (x + 0.06) = 16/9 * 0.24 8/3 x + 4/25 = 32/75 8/3 x = 32/75 - 4/25 | * 75 8 * 25 * x = 32 - 4 * 3 x = 20 / 200 x = 0.1