(2)先化简,再求值: – ,其中x = –3
计算: ( - 3 ) × ( - 6 ) + | 2 - 1 | + ( 5 - 2 π ) 0
解方程: x + 3 x - 3 - 2 x + 3 = 1 .
计算: ( - 2 ) × 6 + | 3 - 2 | - ( 1 2 ) - 1 .
解分式方程: 2 x - 1 x + 2 = 2 - 3 x - 2 .
计算: 18 - ( π - 5 ) 0 + | 2 2 - 3 | .