Question
316 x 12 + 613 x 12 + 612 x 12
= (a)            x 12
= (b)           
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

316 x 12 + 613 x 12 + 612 x 12
= (a)            x 12
= (b)