问题
填空题
如果a=-(-3)3,b=-(-3)2,c=-(-42),则-[a-(b-c)]的值为______.
答案
a=-(-3)3=27,
b=-(-3)2=-9,
c=-(-42)=16,
则-[a-(b-c)]=-[27-(-9-16)]=-[27+25]=-52.
如果a=-(-3)3,b=-(-3)2,c=-(-42),则-[a-(b-c)]的值为______.
a=-(-3)3=27,
b=-(-3)2=-9,
c=-(-42)=16,
则-[a-(b-c)]=-[27-(-9-16)]=-[27+25]=-52.