Sebastian was in a hotel lobby and took the elevator up 7 floors to his room. Then he took the elevator down 9 floors to the par
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We use BODMAS in the following sequence
B - bracket
O - of
D - Divide
M - multiply
A - addition
S - subtract
so firstly we have to solve bracket then of then we have to do divide then we have to solve multiply the. we have to solve add and at last to we have to solve subtract
Hope it helps u