Răspuns :

1DianaMaria3id

a+ b= - 150

a - b= - 84

==>a= - 84 + b

a + b= - 150

a= - 84 + b

==>- 84 + b + b= - 150

-84 + 2b= - 150

2b= -150 + 84

2b= - 66

b= - 66 :2

b= - 33

a= - 84 + b

b=33

==>a = - 84 - 33

a= -117

…ᘛ⁐̤ᕐᐷฅ^•ﻌ•^ฅฅ^•ﻌ•^ฅ

ID Alte intrebari