根据运算定律填空. (1)(x+5)+b=x+(______+______) (
题型:填空题
问题:
根据运算定律填空.
(1)(x+5)+b=x+(______+______)
(2)8x+6x=(______+______)×______
(3)5a+3a+2a=(______+______+______)×______
(4)(a•b)•c=______•(______•______)
根据运算定律填空.
(1)(x+5)+b=x+(______+______)
(2)8x+6x=(______+______)×______
(3)5a+3a+2a=(______+______+______)×______
(4)(a•b)•c=______•(______•______)