21 + 18 / [ (4*2) + 1 ]
21 + 18/9
21 + 2
23
9 is subtracted from 2 less then the product of 4 and 8 in mathematical expression
21 is added to 18 divided by the product of 4 and 2,increased by 1
2 answers
(32 -2) -9
30 - 9
21
30 - 9
21