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3^x + x = 303^x + x = 27+33^x + x = 3^3 + 3So it is clear that x=3 is a solution.
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let 3^x=y , y+x=30 , x=30-y3^x=y and x=30-y then 3^(30-y)=y[3^(30-y)=y]^1/(30-y)3=y^1/(30-y) , 27^1/3=y^1/(30-y)27^1/(30-27)=y^1/(30-y) result y=27 and y=3^x , 27=3^x3^3=3^x ,. x=3
3^x + x = 30
3^x + x = 27+3
3^x + x = 3^3 + 3
So it is clear that x=3 is a solution.
Very nice! ❤
let 3^x=y , y+x=30 , x=30-y
3^x=y and x=30-y then 3^(30-y)=y
[3^(30-y)=y]^1/(30-y)
3=y^1/(30-y) , 27^1/3=y^1/(30-y)
27^1/(30-27)=y^1/(30-y) result y=27 and y=3^x , 27=3^x
3^3=3^x ,. x=3
Very nice! ❤