(0.8x+19.4)*0.2=1.328 решите

Question

(0.8x+19.4)*0.2=1.328 решите

Answer 1

(0,8х +19,4) *0,2 =1,328      0,16х +3,88 = 1,328     0,16х = 1,328 - 3,88    0,16х =-2,552
х = -15,95