Question

calculati nr c,d,e,f unde: c=a+b ;d=a-b; e= c+d; f=c-d, stiind ca : 1) a=+6;b)=+3; 2) a =+4; b=-7 3) a=+5 ; b=-3 4) a=-7; b=-10.

Answer 1

1)c=a+b
c=6+3
C=9

D=a-b
D=6-3
D=3

E=c+d
E=9+3
E=12

F=c-d
F=9-3
F=6


2)c=4+(-7)
C=4-7
C= - 3

D=4-(-7)
D=4+7
D=11

E= - 3+11
E=8

F= - 3-11
F= - 14

3)c=5+(-3)
C=5-3
C=2

D=5-(-3)
D=5+3
D=8

E=2+8
E=10

F=2-8
F= - 6

4) c= - 7+(-10)
C= - 7-10
C= - 17

D= - 7-(-10)
D= - 7+10
D=3

E= - 17+3
E= - 14

F= - 17-3
F= - 20