B6 add D1

(a)  

A5 add B4

(a)  

C3 add 8

(a)  

C2 subtract D5

(a)  

C5 subtract B3

(a)  

B2 subtract C1

(a)  

B3 subtract 5

(a)  

C4 multiply by A4

(a)  

C5 multiply by E1

(a)  

B6 mutiply by 4

(a)