Question

(9+12) +8=(8 + )+9mental maths​

Answer 1

Answer:

(9+12)+8=(8+12)+9

It is accosiative property.

Please mark it as brainliest answer

Answer 2

Step-by-step explanation:

(9+12)+8. = (8+)+9

(21+8). (8+9)

=29. =17

its verified yhey are not equal

i hopey answer is correct