计算:(1)(﹣17)+59+(﹣37)(2)﹣43÷5×(3)﹣1.53×0.75+0.53×﹣3.4×0.75(4)(+1.75)﹣|﹣|+(+1.05)+(﹣)﹣(﹣2.2)(5)﹣(1﹣0.5)÷(6).
计算(本题6分) (1) (2)
计算:.
计算:
化简:(每小题6分,共12分) (1)(2)
计算:--(-2)