计算: 8 + | 2 - 3 | - ( 1 3 ) - 1 - ( 2015 + 2 ) 0
计算: (1)(2)
计算:﹣×﹣(2﹣)2.
计算:-3sin60°-cos30°+2tan45°.
计算:(1) (2)
计算20140+−sin45°+tan60°.