Question

(5,4× + 8,3) × 2,1 = 2,3

Answer 1

(5,4x + 8,3) × 2,1 = 2,3
11,34x + 17,43 = 2,3
11,34x = 2,3 - 17,43
11,34x = 15,13
x= - 1513/1134 или -1 379/1134

Answer 2

5,4x*2,1+8,3*2,1=2,3
11,34x+17,43=2,3
11,34x=2,3-17,43
11,34x=-15,13
x=-15,13/11,34
x=1,3 примерно