Question

De unde a venit 2? Multumesc anticipat

Answer 1

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Answer 2

$5^{1-3x}$ = 25

$5^{1-3x}$ = $5^{2}$

1-3x = 2

-3x = 2-1

-3x = 1

-x = $\frac{1}{3}$

x=$\frac{-1}{3}$

2 vine de la $5^{2}$ care este 25