Question

17+ (12+9) = (17+_) +9​

Answer 1

Answer:

the answer is 12

Step-by-step explanation:

38=26+x

38-26=x

12=x

Answer 2

Step-by-step explanation:

17+(12+9)=(17+_)+9

let the blank place be=X

therefore,

17+(12+9)=(17+x)+9

17+21=(17+X)+9

38=(17+X)+9

(17+X)=38-9

(17+X)=29

X=29-17

X=12