Question

29,1 - ( х + 15,37) = 4,283

Answer 1

29,1 - ( х + 15,37) = 4,283 
29,1 - x - 15,37 = 4,283 
x = 29,1 - 15,37 - 4,283 
x = 9,447

Answer 2

29,1 - ( х + 15,37) = 4,283
29,1 - х - 15,37 = 4,283
-х=4,283+15,37-29,1
-х=-9, 447
Х=9,447