9-1再-4等于几
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1到9相减的所有算式如下:
9–1=8
9–2=7
9–3=6
9–4=5
9–5=4
9–6=3
9–7=2
9–8=1
8–1=7
8–2=6
8–3=5
8–4=4
8–5=3
8–6=2
8–7=1
7–1=6
7–2=5
7–3=4
7–4=3
7–5=2
7–6=1
6–1=5
6–2=4
6–3=3
6–4=2
6–5=1
5–1=4
5–2=3
5–3=2
5–4=1
4–1=3
4–2=2
4–3=1
3–1=2
3–2=1
2–1=1
9–1=8
9–2=7
9–3=6
9–4=5
9–5=4
9–6=3
9–7=2
9–8=1
8–1=7
8–2=6
8–3=5
8–4=4
8–5=3
8–6=2
8–7=1
7–1=6
7–2=5
7–3=4
7–4=3
7–5=2
7–6=1
6–1=5
6–2=4
6–3=3
6–4=2
6–5=1
5–1=4
5–2=3
5–3=2
5–4=1
4–1=3
4–2=2
4–3=1
3–1=2
3–2=1
2–1=1
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