Question 1123318
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<pre>
{{{3^4}}} + {{{2a^b}}} = {{{3^5}}}   ====>


{{{2a^b}}} = {{{3^5}}} - {{{3^4}}} = {{{3^4*(3-1)}}} = {{{2*3^4}}}  ====>


{{{a^b}}} = {{{3^4}}}.


The three pair are


    1)  a = 3,  b = 4;

    2)  a = 9;  b = 2;

    3)  a = 81;  b = 1.
</pre>

Solved.