问题
填空题
去括号:
(1)a-(b+c-3)=______;
(2)x+(5-3y)=______.
答案
(1)a-(b+c-3)
=a-b-c+3,
(2)x+(5-3y)
=x+5-3y,
故答案为:a-b-c+3.x+5-3y.
去括号:
(1)a-(b+c-3)=______;
(2)x+(5-3y)=______.
(1)a-(b+c-3)
=a-b-c+3,
(2)x+(5-3y)
=x+5-3y,
故答案为:a-b-c+3.x+5-3y.