1) 型態一：2x + 1 = 5
① 移項：2x = 5 - 1
② 化簡：2x = 4
③ 答案：x = 42 = 2
2) 型態二：4x + 3 = 15
① 移項：4x = 15 - 3
② 化簡：4x = 12
③ 答案：x = 124 = 3
3) 型態三：x3 + 2 = 8
① 移項：x3 = 8 - 2
② 化簡：x3 = 6
③ 答案：x = 6 × 3 = 18
4) 型態四：x2 + 3 = 9
① 移項：x2 = 9 - 3
② 化簡：x2 = 6
③ 答案：x = 6 × 2 = 12