(1)计算: ( 8 - 1 2 ) × 6 ;
(2)解方程: 2 x - 5 x - 2 + 3 = 3 x - 3 x - 2 .
计算(本题6分) (1) (2)
计算: (1) (2)
(每小题3分,共12分) (1)(2) 8-8÷(-2) (3)(4)
计算:
解不等式组.