5/8 - 3/8:x=0.65
3/8:x=5/8-13/20
3/8:x=-1/40
x = 3/8:-1/40
suy ra: x = -15
\(\dfrac{5}{3}-\dfrac{3}{8}:x=0,65\)
<=>\(\dfrac{5}{3}-\dfrac{3}{8x}=0,65\)
<=>\(\dfrac{3}{8x}=\dfrac{5}{3}-0,65=\dfrac{61}{60}\)
<=>\(x=\dfrac{61}{60}\cdot\dfrac{8}{3}=\dfrac{488}{180}=\dfrac{122}{45}\)
5/8 - 3/8:x=0.65
3/8:x=5/8-13/20
3/8:x=-1/40
x = 3/8:-1/40
suy ra: x = -15
5/8 - 3/8:x=0.65
3/8:x=5/8-13/20
3/8:x=-1/40
x = 3/8:-1/40
x =-15