Max and Tanya are painting two

Question

adjacent walls of equal area. Max
has painted 3/7 of his wall and
Tanya has painted 2/5 of her wall .
a) what fraction of the two walls
have Max and Tanya painted in
total ?
b) what fraction of the two walls
remains to be painted?​

Answer 1

(a) 3/7 + 2/5 = 15/35 + 14/35 = ____
(b) 1 - (a) = ___