5个5,随便用加减乘除,怎么样才能等于24???
1个回答
展开全部
:75道计算题。包括+、-、*、/、乘方。有点括号也行。(不一定全部都有)
:1.
3/7
×
49/9
-
4/3
2.
8/9
×
15/36
+
1/27
3.
12×
5/6
–
2/9
×3
4.
8×
5/4
+
1/4
5.
6÷
3/8
–
3/8
÷6
6.
4/7
×
5/9
+
3/7
×
5/9
7.
5/2
-(
3/2
+
4/5
)
8.
7/8
+
(
1/8
+
1/9
)
9.
9
×
5/6
+
5/6
10.
3/4
×
8/9
-
1/3
0.12χ+1.8×0.9=7.2
(9-5χ)×0.3=1.02
6.4χ-χ=28+4.4
11.
7
×
5/49
+
3/14
12.
6
×(
1/2
+
2/3
)
13.
8
×
4/5
+
8
×
11/5
14.
31
×
5/6
–
5/6
15.
9/7
-
(
2/7
–
10/21
)
16.
5/9
×
18
–
14
×
2/7
17.
4/5
×
25/16
+
2/3
×
3/4
18.
14
×
8/7
–
5/6
×
12/15
19.
17/32
–
3/4
×
9/24
20.
3
×
2/9
+
1/3
21.
5/7
×
3/25
+
3/7
22.
3/14
××
2/3
+
1/6
23.
1/5
×
2/3
+
5/6
24.
9/22
+
1/11
÷
1/2
25.
5/3
×
11/5
+
4/3
2:75道化简求值。有大、中、小括号(不一定全有):3.3ab-4ab+8ab-7ab+ab=______.
4.7x-(5x-5y)-y=______.
5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.
6.-7x2+6x+13x2-4x-5x2=______.
7.2y+(-2y+5)-(3y+2)=______.
11.(2x2-3xy+4y2)+(x2+2xy-3y2)=______.
12.2a-(3a-2b+2)+(3a-4b-1)=______.
13.-6x2-7x2+15x2-2x2=______.
14.2x-(x+3y)-(-x-y)-(x-y)=______.
16.2x+2y-[3x-2(x-y)]=______.
17.5-(1-x)-1-(x-1)=______.
18.(
)+(4xy+7x2-y2)=10x2-xy.
19.(4xy2-2x2y)-(
)=x3-2x2y+4xy2+y3.
21.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______.
22.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______.
23.若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______.
25.一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1,那么这个多项式等于______.
26.-(2x2-y2)-[2y2-(x2+2xy)]=______.
27.若-3a3b2与5ax-1by+2是同类项,则x=______,y=______.
28.(-y+6+3y4-y3)-(2y2-3y3+y4-7)=______.
非常抱歉,三线八角真的不好找,何况上面的
我都找了十多分钟。。。
5个5,随便用加减乘除,怎么样才能等于24???
:1.
3/7
×
49/9
-
4/3
2.
8/9
×
15/36
+
1/27
3.
12×
5/6
–
2/9
×3
4.
8×
5/4
+
1/4
5.
6÷
3/8
–
3/8
÷6
6.
4/7
×
5/9
+
3/7
×
5/9
7.
5/2
-(
3/2
+
4/5
)
8.
7/8
+
(
1/8
+
1/9
)
9.
9
×
5/6
+
5/6
10.
3/4
×
8/9
-
1/3
0.12χ+1.8×0.9=7.2
(9-5χ)×0.3=1.02
6.4χ-χ=28+4.4
11.
7
×
5/49
+
3/14
12.
6
×(
1/2
+
2/3
)
13.
8
×
4/5
+
8
×
11/5
14.
31
×
5/6
–
5/6
15.
9/7
-
(
2/7
–
10/21
)
16.
5/9
×
18
–
14
×
2/7
17.
4/5
×
25/16
+
2/3
×
3/4
18.
14
×
8/7
–
5/6
×
12/15
19.
17/32
–
3/4
×
9/24
20.
3
×
2/9
+
1/3
21.
5/7
×
3/25
+
3/7
22.
3/14
××
2/3
+
1/6
23.
1/5
×
2/3
+
5/6
24.
9/22
+
1/11
÷
1/2
25.
5/3
×
11/5
+
4/3
2:75道化简求值。有大、中、小括号(不一定全有):3.3ab-4ab+8ab-7ab+ab=______.
4.7x-(5x-5y)-y=______.
5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.
6.-7x2+6x+13x2-4x-5x2=______.
7.2y+(-2y+5)-(3y+2)=______.
11.(2x2-3xy+4y2)+(x2+2xy-3y2)=______.
12.2a-(3a-2b+2)+(3a-4b-1)=______.
13.-6x2-7x2+15x2-2x2=______.
14.2x-(x+3y)-(-x-y)-(x-y)=______.
16.2x+2y-[3x-2(x-y)]=______.
17.5-(1-x)-1-(x-1)=______.
18.(
)+(4xy+7x2-y2)=10x2-xy.
19.(4xy2-2x2y)-(
)=x3-2x2y+4xy2+y3.
21.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______.
22.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______.
23.若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______.
25.一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1,那么这个多项式等于______.
26.-(2x2-y2)-[2y2-(x2+2xy)]=______.
27.若-3a3b2与5ax-1by+2是同类项,则x=______,y=______.
28.(-y+6+3y4-y3)-(2y2-3y3+y4-7)=______.
非常抱歉,三线八角真的不好找,何况上面的
我都找了十多分钟。。。
5个5,随便用加减乘除,怎么样才能等于24???
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询