11问答网
所有问题
当前搜索:
4x5十4可以写成4x6吗
...4x+27=63 4x+9X3=63 3x-8=19 3x-2X4=19 6x+
4x5
=68 12x-7X2=82 6x...
答:
8x+12=14.4 8x=14.4-12 8x=2.
4 x
=0.3 2(x+3.5)=12.6 2x+7=12.6 2x=12.6-7 2x=5.6 x=2.8 3(x-1.2)=7.2 3x-3.6=7.2 3x=7.2+3.6 3x=
10
.8 x= 3.6 9(x-3.8)=108 x-3.8=108÷9 x-3.8= 12 x=12+3.8 x=15.8 3x-
4X6
=27 3x-24=27 3...
简便方法算:3/
4x5
+3/
4X6
+3/4
答:
3/
4x5
+3/
4X6
+3/4 =3/4×(5+6+1)=3/4×12 =9
1/1x3+1/2x4+1/3x
5
+1/
4x6
+1/5x7+1/6x8
答:
1/1x3+1/2x4+1/3x
5
+1/
4x6
+...+1/10x12 1/1×3 + 1/2×4 + 1/3×5 +...+ 1/
10
×12 = (1/2)×(1 - 1/3) + (1/2)×(1/2 - 1/4) + ... + (1/2)(1/10 - 1/12) = (1/2)×(1 - 1/3 + 1/2 - 1/4 + ... + 1/10 - 1/12) = (...
2X4/1 +
4X6
/1 + 6X8/1 + 8X
10
/1 + …… + 48X50/1
答:
那么解法不同: 1/2x3+1/3x4+1/
4x5
+1/5
x6
+1/6x7+1/7x8+1/8x9+1/9x
10
+1/10x11 =1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+6/1-1/7+1/7-1/8+1/8-1/9+1/9-1/10+1/10-1/11 =1/2-1/11 =9/22 (亲,希望能对你有所帮助,合作愉快,感谢采纳哦!^-...
<涓婁竴椤
1
2
3
76
其他人还搜