Answer :

use order of operations or ----> PEMDAS 
(9.2-4.9÷7) +36.4
first divide -4.9 by 7 in the parenthesis. 
9.2-0.7+34.6
now add -0.7 and 34.6
9.2+33.9
now add these numbers together and your answer is.... 43.1