问题
计算题
(-4)-(-2)-{(-5)-[(-7)+(-3)-(+8)]};
答案
-15
解:(-4)-(-2)-{(-5)-[(-7)+(-3)-(+8)]}
=-4+2-(-5+7+3+8)
=-4+2-13
=-15
(-4)-(-2)-{(-5)-[(-7)+(-3)-(+8)]};
-15
解:(-4)-(-2)-{(-5)-[(-7)+(-3)-(+8)]}
=-4+2-(-5+7+3+8)
=-4+2-13
=-15