3 − x ≤ x − 7 {\displaystyle 3-x\leq x-7} וגם 3 ( x − 1 ) ≤ 2 x + 4 {\displaystyle 3(x-1)\leq 2x+4} וגם x + 8 < 6 x − 17 {\displaystyle x+8<6x-17}
{ 3 − x ≤ x − 7 10 ≤ 2 x 5 ≤ x {\displaystyle {\begin{cases}3-x\leq x-7\\10\leq 2x\\5\leq x\end{cases}}}
וגם
{ 3 ( x − 1 ) ≤ 2 x + 4 3 x − 3 ≤ 2 x + 4 x ≤ 7 {\displaystyle {\begin{cases}3(x-1)\leq 2x+4\\3x-3\leq 2x+4\\x\leq 7\end{cases}}}
{ x + 8 < 6 x − 17 25 < 5 x 5 < x {\displaystyle {\begin{cases}x+8<6x-17\\25<5x\\5<x\end{cases}}}
סיכום מערכת וגם : 5 < x ≤ 7 {\displaystyle 5<x\leq 7}
