Question

Multimea solutiilor inecuatiei!

Answer 1

$- 63x - 35 < 0 \\ - 63x < 35 \\ x > - \frac{5}{9} \\ x\in( - \frac{5}{9} \: \c{} \: \infty )$

Answer 2

Răspuns:

$-\frac{3}{5} x-\frac{7}{21} < 0\\-\frac{3}{5} x < \frac{7}{21} | *(-\frac{5}{3} )\\x > \frac{7}{21} *(-\frac{5}{3})\\ x > -\frac{5}{9}$

Deci, x∈($\frac{-5}{9}$, +∞)