计算: (1) (2) (3) (4) (5) (6)
解不等式组: 4 ( x - 1 ) < x + 2 x + 7 3 > x
计算: | - 3 | - ( 4 - π ) 0 + 2 sin 60 ° + ( 1 4 ) - 1 .
解不等式组: 3 ( x + 1 ) > x - 1 x + 9 2 > 2 x
计算 4 sin 45 ° + ( π - 2 ) 0 - 18 + | - 1 |
解不等式组: 2 ( x + 1 ) > 5 x - 7 x + 10 3 > 2 x .