3^x*21-5^x*25=3^x*4^4-5^x*5^3

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Solution for 3^x*21-5^x*25=3^x*4^4-5^x*5^3 equation: 



3^x*21-5^x*25=3^x*4^4-5^x*5^3

We move all terms to the left:

3^x*21-5^x*25-(3^x*4^4-5^x*5^3)=0

Wy multiply elements

63x-125x-(3^x*4^4-5^x*5^3)=0

We get rid of parentheses

63x-125x-3^x*4^4+5^x*5^3=0

We add all the numbers together, and all the variables

-62x-3^x*4^4+5^x*5^3=0

Wy multiply elements

-12x^5+25x^4-62x=0

We do not support expression: x^5

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