Question

7pe9x-2pe3x=2 DAU COROANA calculati

Answer 1

$\frac{7}{9x} - \frac{2}{3x} = 2$
Amplificam a doua fractie cu 3
$\frac{7}{9x} - \frac{6}{9x} = 2$
$\frac{1}{9x} = 2$
18x = 1 
x = $\frac{1}{18}$