Question

Daca a+b=-7 si c=-3,atunci calculati a+(b+c).
Daca a=-2 si b+c=-19,atunci calculati (a+b)+c
Daca a+b=-10 si c+d=+124,atunci calculati (a+b)-(c+d)

Answer 1

-10-124=-134 sper ca te.am ajutat
pupppp

Answer 2

1) a+b = -7  s i c = -3   =>  a+(b+c) = (a+b) + c = (-7)+(-3) =-7-3=-10

2) a = -2  si  b+c = -19  => a+(b+c) = -2 + (-19) = -2-19 = - 21

a+b= -10  si  c+d = 124 => (a+b)-(c+d) = -10 - (+124) = -10-124 = - 134