Question

a) daca A+B,C=-25,calculatiC(-4+-6+1-5)
b) dacaA=+30,B+C=-40,calculati A+B+C
c)dacaA+B=-86,C+D=+98,calculatiA+B+C+D

Answer 1

a) c(-4-6+1-5)= c(-10-4)=c·(-14)= -25·(-14)= +350=350
b) a+b+c=30-40=-10
c) a+b+c+d=-86+98=98-86= +12=12