x. 17 - 29,8 = 13,72
x.17 = 13,72 + 29,8
x.17 = 43,52
x = 43,52 : 17
x = 2,56
x.13,2 + 12,15 = 354,162
x.13,2 = 354,162 - 12,15
x.13,2 = 342,012
x = 342,012 : 13,2
x = 25,91
X x 17 - 29,8 = 13,72
X x 17 = 13,72 + 29,8
X x 17 = 43,52
X = 43,52 : 17
X = 2,56
X x 13,2 + 12,15 = 354,162
X x 13,2 = 354,162 - 12,15
X x 13,2 = 342,012
X = 342,012 : 13,2
X = 25,91