x + x : 0,5 + x : 0,25 + x : 0,125 = 15
X + X : \(\frac{1}{2}\)+ X : \(\frac{1}{4}\)+ X :\(\frac{1}{8}\)= 15
X + X x 2 + X x 4 + X x8 =15
X x (1+2+4+8) = 15
X x 15 = 15
x = 15 : 15
x =1
Tk mình nha!!
~Shizadon~
X + X : 0,5 + X : 0,25 + X : 0,125 = 15
X x 1 + X x 2 + X x 4 + X x 8 = 15
X x [ 1 + 2 + 4 + 8 ] = 15
X x 15 = 15
=> X = 15 : 15 = 1