Order of Operations (PEMDAS) :
Gives you number crunching for a given numerical expressions with or without
variables.
Eg:
Inupt Expression without variables is 4^2+(4+2)/2 * (5+2)
= 4 2 + ( 4 + 2 ) / 2 × ( 5 + 2 )
= 16 + ( 4 + 2 ) / 2 × ( 5 + 2 )
= 16 + 6 / 2 × ( 5 + 2 )
= 16 + 3 × ( 5 + 2 )
= 16 + 3 × 7
= 16 + 21
= 37
Inupt Expression with variables is 4^2+(4+2)/2* (5+2)+s and Given Values are s=1
= 4 2 + ( 4 + 2 ) / 2 × ( 5 + 2 ) + 1
= 16 + ( 4 + 2 ) / 2 × ( 5 + 2 ) + 1
= 16 + 6 / 2 × ( 5 + 2 ) + 1
= 16 + 3 × ( 5 + 2 ) + 1
= 16 + 3 × 7 + 1
= 16 + 21 + 1
= 37 + 1
= 38
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