jika diketahui p= -½ Q=2½ r=3⅓ tentukan p+2Q-r

p+2q-r = -1/2+2(2 1/2)-3 1/3
= -1/2 + 2(5/2) - 10/3
= -1/2 + 10/2 - 10/3
= -6/12 + 60/12 - 40/12
= 14/12 = 1 2/12 = 1 1/6

Semoga membantu yaa:)