jika p=2 3/4, q=1 5/12 dan l= -2/3...... tentukan p+pq+pl

p + pq + pl = 11 /4 +( 11 /4 × 17 / 12 )+ (11 / 4 ×-2 /3)= 11 /4 + 187 / 48 - 22 / 12
= 132 / 48 + 187 / 48 - 88 / 48 = 319 / 48 - 88 / 48 = 231 / 48 = 4 39/ 48