(1)解方程: 2 x = 3 x + 1
(2)解不等式组: 2 x > 0 x + 1 2 > 2 x - 1 3 .
(1)解不等式组: 2 x + 3 > 1 ① x - 2 ⩽ 1 2 x + 2 ②
(2)解方程: 5 2 x - 1 = 3 x + 2 .
(1)计算: ( 7 - 1 ) 0 - ( - 1 2 ) - 2 + 3 tan 30 ° ;
(2)解方程: x + 1 x - 1 + 4 1 - x 2 = 1 .
解方程和不等式组:
(1) 2 x - 5 x - 2 = 3 x - 3 x - 2 - 3 ;
(2) - 2 x ⩽ 6 4 x + 1 < 5 .
(1)解方程: 1 x - 3 = 3 x
(2)解不等式: 2 ( x - 6 ) + 4 ⩽ 3 x - 5 ,并将它的解集在数轴上表示出来.
(1)解方程: x - 3 x - 2 + 1 = 3 2 - x ;
(2)解不等式组: 2 x > 1 - x 4 x + 2 < x + 4 .
解方程: 2 x - 1 1 + x = 0 .
(1) x 2 x - 5 + 5 5 - 2 x = 1
(2) 5 x - 10 ⩽ 0 x + 3 > - 2 x .
(1)计算: 12 + | 3 − 3 | − 2 sin 60 ° + ( 2017 − π ) 0 + ( 1 2 ) − 2
(2)解方程: 2 − x x − 3 + 1 3 − x = 1 .
解方程: x 2 + 2 x − 2 + 1 = 6 x − 2 .
解方程: x x − 2 − 8 x 2 − 4 = 1 x + 2 .
解方程: x + 1 x − 1 + 4 1 − x 2 = 1 .
解方程: x x + 2 + 1 x = 1 .
解方程: x x − 1 − 3 ( x − 1 ) ( x + 2 ) = 1 .
解方程: 1 x − 2 − 3 = x − 1 2 − x .