(15+2(1/3)+3(2/3))/7+2*2=(15+2/3+2)/7+4=(17+2/3)/11=53/3 / 11=53/3 / 33/3=53/3 * 3/33=53/33
(1 71/3+3 2/3)/7+2*2= 21/7+2*2= 3+4=7