tolongg di jawab ya

a. = 16/18 + 3/18 - 6/18
= 13/18
b. = 10/6 + 10(1/12) - 1/4
= 20/12 + 121/12 - 3/12
= 138/12
= 11 1/2
c. = 2/50 - 1/5
= 2/50 - 10/50
= - 8/50
= - 4/25