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Calculati:
a) -9+ |-7+12|=
b) -3+|-4+8|+|-3+5|=


Răspuns :

a) -9+ |-7+12|= -9+I+5I=-9+5=-4
b) -3+|-4+8|+|-3+5|=
-3+I+4I+I+2I=
-3+4+2=+1+2=+3
a)-9+/-7+12/=-9-7+12=4 b)-3+/-4+8/+/-3+5=-3-4-8-3+5=-7