1.

If \[{{2}^{a}}+{{3}^{b}}=43\]and \[{{2}^{a+3}}-{{3}^{b+1}}=47,\]find the respective values of 'a' and 'b'.

A.  4, 3       
B.         3, 4                       
C.         16, 27                  
D.         2, 6
Answer» B.         3, 4                       


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