2/3-1/5×2/3=10/15-2/15=8/15
2/3-1/5 x2/3=2/3 x(1-1/5)=2/3 x4/5 =8/15
2/3-1/5×2/3=2/3x(1-1/5)=8/15
2/3-1/5×2/3=2/3×(1-1/5)=2/3×4/5=8/15
2/3-1/5×2/3=2/3-2/15=10/15-2/15=8/15