Question 211294
{{{5/8-(2/3)(-1+2/5)}}}
={{{5/8-(2/3)(-5/5+2/5)}}}
={{{5/8-(2/3)((-5+2)/5)}}}
={{{5/8-(2/3)(-3/5)}}}
={{{5/8+(2/3)(3/5)}}}
={{{5/8+(2/cross(3))(cross(3)/5)}}}
={{{5/8+2/5}}}
={{{(5*5)/(8*5)+(2*8)/(5*8)}}}
={{{25/40+16/40}}}
={{{41/40}}}