6.72 :(203.2 -х)=2.11.3х+3.8х-0.03=2.01

I) 1.3х + 3.8х-0.03=2.01  1.3х + 3.8х = 2.01 + 0.03 5.1х = 2.04 х = 2.04/5.1 х = 0.4 Проверка: 5.1 * 0.4 = 2.04 2.04 = 2.04 Ответ: х=0.4 II) 6.72/(203.2 -х)=2.1 203.2 - x = 6.72/2.1 203.2 - х = 3.2  х = 203.2 - 3.2 х = 200 Проверка: 6.72/(203.2 - 200) = 2.1 6.72/3.2 = 2.1 2.1 = 2.1 Ответ: х=200