题库 初中数学
题干
计算：
(1)(-6)-(+5)+(-7)-(-4)
(2) (-8)
(-4)
(3)
(4)
(5)
(6)
(
)
(7)x+(5x+3y)-(3x-2y)
(8)(5a2+2a-1)-4(3-2a+a2)
(1)(-6)-(+5)+(-7)-(-4)
(2) (-8)
(-4)(3)
(4)
(5)
(6)
()(7)x+(5x+3y)-(3x-2y)
(8)(5a2+2a-1)-4(3-2a+a2)
答案(点此获取答案解析）
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