



 
Hi Dishant, B stands for brackets so the first step is to evaluate (5x2) = (10). There is no exponentiation (E) or division (D) so next is multiplication (M). There is a multiplication implicitbetween the 2 and 10 in 2(10) so you have to compute 2(10)x2 = 2 x 10 x 2 = 40. Next comes addition (A) so add 40 and 7 to get 33 and hence the problem is now 3  33. Finally subtraction (S): 3  33 = 30 and thus
Penny  


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