|6|

|7|+|7-|=

-5+-7

18+(-5)

-2 + (-7) =

$4\ +\ \left(-5\right)\ =$

 $5\ \times\ \left(-4\ \right)=$  

 $-5\ +\ \left(-6\right)\ =$  

 $6\ -\ \left(-3\right)\ =$  

 $-5\ -\ \left(-2\right)\ =$  

 $-4\ \times\ 8\ =$  

حل المعادلة س - 7 = -2

ل + 8 = -2

حل المعادلة 7م = 63

ك + 8 = -1