Ushtrimi 3 | 9D | Matematika 9 | Zgjidhje Ushtrimesh

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$-x > 2 \rArr -1x > 2 \rArr \dfrac{\cancel{-1}x}{\cancel{-1}} < \dfrac{2}{-1} \rArr x < -2$ (ndryshohet kahu i shenjës kur pjesëtojmë me minus)
$55 \leq 22 - 11x \rArr 22-11x \geq 55$ $\rArr$ $-11x \geq 55-22$ $\rArr$ $-11x \geq 33$ $\rArr$ $\dfrac{\cancel{-11}x}{\cancel{-11}} \leq \dfrac{33}{-11}$ $\rArr$ $x \leq -3$
$8(5x-7)-9 \leq 55$ $\rArr$ $40x-56-9 \leq 55$ $\rArr$ $40x-65 \leq 55$ $\rArr$ $40x \leq 55+65$ $\rArr$ $40x \leq 120$ $\rArr$ $\dfrac{\cancel{40}x}{\cancel{40}} \leq \dfrac{120}{40}$ $\rArr$ $x \leq 3$
$5(3x+7)+6 > 91$ $\rArr$ $15x+35+6>91$ $\rArr$ $15x+41 > 91$ $\rArr$ $15x > 91-41$ $\rArr$ $15x > 50$ $\rArr$ $\dfrac{\cancel{15}x}{\cancel{15}} > \dfrac{50}{15}$ $\rArr$ $x > \dfrac{10}{3}$