F.1方程數學題

大大你好 ~


1. 5x+3=8

5x = 8 -3

x = 5 / 5

x = 1

2.-2(2x-3)=18

2x - 3 = 18 / (-2)

2x = -9 + 3

x = -6 / 2

x = -3

第三題有問題喔 ~

4.4+5(x-2)=24

4 + 5x - 10 = 24

5x = 24 - 4 + 10

x = 30 / 5

x = 6

5.x-12=-3

x = -3 + 12

x = 9

6.(x+1)-3(x-4)=11

x + 1 - 3x + 12 = 11

-2x + 13 = 11

-2x = -2

x = -2 / -2

x = 1

1.整數 → integer
2.負數 → negative number
3.乘 → times, multiply
4.除 → divide
5.化簡 → simplify
6.公式 → formula
7.對角線 → diagonal
希望能夠可以幫大大！第三條可以補充，之後再回答您的！

本人亦系f.1~ 希望能夠幫到妳啦<3!

1.5x+3=8
5x+3-3=8-3
5x=5
5x/5=5/5
x=1

2.-2(2x-3)=18
-4x+6=18
-4x+6-6=18-6
-4x=12
-4x/-4=12/-4
x=-3
3.+10-2x=-8x
+10=-8x+2x
+10=-6x
+10/-6=-6x/-6
x=10over6 (除吾盡:(!)
4.4+5(x-2)=24
4+5x-10=24
4+5x=24-10
4+5x=14
4+5x-4=14-4
5x=10
5x/5=10/5
x=2
5.x-12=-3
x=-3+12
x=+9
6.(x+1)-3(x-4)=11
(x+1)-3x+12=11
x+1-3x+12=11
x-3x=-1-12+11
-2x=+2
-2x/-2=+2/-2
x=-1



英文生字;
integer 整數
negative number 負數
multiply 乘
Devide 除
simplify 化簡
formula 公式
(7.對角線; 請問等吾等於相交線?吾系太明對角線)

1. 5x+3=8

5x = 8 -3

x = 5 / 5

x = 1

2.-2(2x-3)=18

2x - 3 = 18 / (-2)

2x = -9 + 3

x = -6 / 2

x = -3

3.+10-2x=-8x
+10-2x+2x=-8x+2x
+10=-6x
+10/-6=-6x/-6
-1有2/3=x

4.4+5(x-2)=24

4 + 5x - 10 = 24

5x = 24 - 4 + 10

x = 30 / 5

x = 6

5.x-12=-3

x = -3 + 12

x = 9

6.(x+1)-3(x-4)=11

x + 1 - 3x + 12 = 11

-2x + 13 = 11

-2x = -2

x = -2 / -2

x = 1

1.整數 → integer
2.負數 → negative number
3.乘 → times, multiply
4.除 → divide
5.化簡 → simplify
6.公式 → formula
7.對角線 → diagonal

1. 5x+3=8
5x=8-3
5x=5
x=1
2.-2(2x-3)=18
-4x+3=18
-4x=18-3
-4x=15
x=-3.75
3.+10-2x=-8x
是什麼數+10?還是正10呢
+10-2x=-8x
10=6x
5/3=x
x=5/3
4.4+5(x-2)=24
5x-10=20
5x=30
x=6
5. x-12=-3
x-12+12=-3+12
x=9
6.(x+1)-3(x-4)=11
x+1-3x+12=11
-2x+13=11
-2x=-2
x=1

1.整數integer
2.負數negative number
3.乘Multiplication[[Eg.23=6 >>Multiply 2 by 3 or 2 times 3, the product is 6]]
4.除division[[Eg.62=3 >>Divide 6 by 2,the quotient is 3]]
5.化簡simplify
6.公式formula
7.對角線diagonal

2009-12-26 16:45:47 補充：
2.-2(2x-3)=18
-4x+6=18
-4x=18-6
-4x=12
x=-3

2009-12-26 18:31:54 補充：
3.+10-2x=-8x
是什麼數+10?還是正10呢
+10-2x=-8x
10=-6x
-5/3=x
x=-5/3