Question

Решите неравенство, которое дано на фото (B3)

Answer 1

$\frac{7-2x}{5} \geq \frac{x}{2} +1 \\ \\ 14-4x \geq 5x+10 \\ \\ 5x+4x \leq 14-10 \\ \\ 9x \leq 4 \\ \\ x \leq \frac{4}{9}$

Answer 2

$\large \\ {7-2x\over5}\geq {x\over2}+1\\\\ {7-2x\over5}- {x\over2}-1\geq 0\\\\ {2\cdot(7-2x)-5\cdot x-5\cdot2\cdot1\over5\cdot2}\geq 0\\\\ {14-4x-5x-10\over10}\geq 0\\\\ -9x+4\geq 0\\\\ 9x\leq 4\\\\ x\leq{4\over9}$