Question

30-(6+8) 40-(7+7) 50-(8+8) 60-(9+9)

Answer 1

30-(6+8)=30-14 = 16
40-(7+7)= 40-14=26
 50-(8+8) =50-16=34
60-(9+9)=42-18=42

Answer 2

30-(6+8)=42 , 40-(7+7)=40 , 50-(8+8)=50 , 60 -(9+9)=60 .