(-5)......(+10).....(+7)=  -8

 

(+7)......(+11)......(+20) = -2



Sagot :

(-5) - (+10 ) + (+7 ) = -8
(+7) + ( +11 ) -( + 20 ) = -2
(-5) - (+10 ) + (+7 ) = -8
(+7) + ( +11 ) -( + 20 ) = -2