解方程.
(1)X= | (2)x-x= | (3)X-=×2 | (4)X÷=16 |
解方程或比例:
x:=:4 | = | 3:x=9:15 | = | :=:x. |
在横线里填上“<”“>”或者“=”
________ | ________ | ________1.25 | ________ | ________. |
求未知数的值:
(1)x-= | (2)x+x=22 |
(1)X= | (2)x-x= | (3)X-=×2 | (4)X÷=16 |
x:=:4 | = | 3:x=9:15 | = | :=:x. |
________ | ________ | ________1.25 | ________ | ________. |
(1)x-= | (2)x+x=22 |