(1)计算: | - 4 | - ( - 2 ) 2 + 9 - ( 1 2 ) 0
(2)解不等式组 3 x - x ⩾ 2 1 + 2 x 3 > x - 1 .
化简
(-5)×(-8)-(-28)÷4-2-(-2)-2×(-1)+|-4|×0.5+2×(-1)
计算:.
计算:-13-(1-0.5)××[2-(-3)2].