15.9/7 - ( 2/7 – 10/21 ) 5/9 × 18 – 14 × 2/7 4/5 × 25/16 + 2
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/06 06:00:39
15.9/7 - ( 2/7 – 10/21 ) 5/9 × 18 – 14 × 2/7 4/5 × 25/16 + 2/3
15.9/7 - ( 2/7 – 10/21 )
5/9 × 18 – 14 × 2/7
4/5 × 25/16 + 2/3 × 3/4
14 × 8/7 – 5/6 × 12/15
17/32 – 3/4 × 9/24
15.9/7 - ( 2/7 – 10/21 )
5/9 × 18 – 14 × 2/7
4/5 × 25/16 + 2/3 × 3/4
14 × 8/7 – 5/6 × 12/15
17/32 – 3/4 × 9/24
15.9/7 - ( 2/7 – 10/21 )
= 9/7 - 2/7 + 10/21
=1+10/21
=31/21
5/9 × 18 – 14 × 2/7
=10-4
=6
4/5 × 25/16 + 2/3 × 3/4
=5/4+2/4
=7/4
14 × 8/7 – 5/6 × 12/15
=16-2/3
=15又1/3
17/32 – 3/4 × 9/24
=51/96-27/96
=24/96
=1/4
= 9/7 - 2/7 + 10/21
=1+10/21
=31/21
5/9 × 18 – 14 × 2/7
=10-4
=6
4/5 × 25/16 + 2/3 × 3/4
=5/4+2/4
=7/4
14 × 8/7 – 5/6 × 12/15
=16-2/3
=15又1/3
17/32 – 3/4 × 9/24
=51/96-27/96
=24/96
=1/4
15.9/7 - ( 2/7 – 10/21 ) 5/9 × 18 – 14 × 2/7 4/5 × 25/16 + 2
1+2+3+4+5+6+7+8+9+10+11+14+15+16+17+18+19+20+21+22+23+24+25+
计算:1–2–3+4+5–6–7+8+…….+2009–2010–2011等于多少?
)1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23
1+2+3+4+5+6+7+8+9+10+12+14+16+18+20=?
已知(4m+1)的平方+2n–m–四分之三的绝对值等于0,先化简,再求值:4(3m–5n)–3(5m–7n+1)+(2m
请问1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+2
1+2+3+4+5+6+7+8+9+10+11+12+3+14+15+16+17+18+19+20+21+23+24+2
1+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+2
0+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+2
1+2+3+4+5+5+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+
找规律 7 4 5 22 14 26 (1) 6 14 9 12 12 ( ) (2) 10 21 9 16 8 ( )