X : 0 , 125 + X : 0 , 25 - X : 0 , 5 = 48 , 5
X x 8 + X x 4 - X x 2 = 48 , 5
X x ( 8 + 4 - 2 ) = 48 , 5
X x 10 = 48 , 5
X = 48 , 5 : 10
X = 4 , 85
Vậy X = 4 , 85
Tham khảo nha !!!
x : 0,125 + x : 0,25 - x : 0,5 = 48,5
x * 8 - x * 4 - x * 2 =48.5
x * (8 - 4 - 2 ) =48.5
x * 2 =48.5
x =48.5 : 2
x =24.25