2 7/8(7/12 + 1) = 1 7/12 = 19/12 = 19/12 * 6/12 =6/12=1/2
9 1/2* 2 7/8 * 1/3 9 1/2* 1/3 19/6
2 7/8(7/12+1) 7/12+1 19/12
== =19/12*6/19=6/12=1/2
9 1/2*2 7/8*1/3 9 1/2*1/3 19/6
2 7/8(7/12 + 1) = 1 7/12 = 19/12 = 19/12 * 6/12 =6/12=1/2
9 1/2* 2 7/8 * 1/3 9 1/2* 1/3 19/6
2 7/8(7/12+1) 7/12+1 19/12
== =19/12*6/19=6/12=1/2
9 1/2*2 7/8*1/3 9 1/2*1/3 19/6