Răspuns :
Răspuns:
3.
a) -10-200= -210
b) -600+75= - 525
c) -715-(+321)= -(715+321)= -1036
d) -12-(-128)= -12+128= 116
e) |-3+2+9|+|-7|+(-20)= |-3+11|+7-20= |8|+7-20= 8+7-20= 15-20= -5
Răspuns:
3.
a) -10-200= -210
b) -600+75= - 525
c) -715-(+321)= -(715+321)= -1036
d) -12-(-128)= -12+128= 116
e) |-3+2+9|+|-7|+(-20)= |-3+11|+7-20= |8|+7-20= 8+7-20= 15-20= -5