包含浙商银行理财产品最新2021的词条

一元一次方程是指只含有一个未知数，并且未知数的最高次数为1的方程。以下是一些一元一次方程的计算题目：

1. 解方程：2x + 5 = 19

2. 解方程：3x 7 = 2

3. 解方程：5x + 4 = 3x + 15

4. 解方程：4x 3 = 2(x + 1)

5. 解方程：2(x 3) = 3x + 6

6. 解方程：x/2 + 3 = 7

7. 解方程：3(x 2) 2x = 5

8. 解方程：2x 5 = 3(x + 2)

9. 解方程：x + 4 = 2(x 1) + 3

10. 解方程：5x 3 = 2(x + 1) 7

下面是这些方程的解答：

1. 2x + 5 = 19

2x = 19 5

2x = 14

x = 14 / 2

x = 7

2. 3x 7 = 2

3x = 2 + 7

3x = 9

x = 9 / 3

x = 3

3. 5x + 4 = 3x + 15

5x 3x = 15 4

2x = 11

x = 11 / 2

x = 5.5

4. 4x 3 = 2(x + 1)

4x 3 = 2x + 2

4x 2x = 2 + 3

2x = 5

x = 5 / 2

x = 2.5

5. 2(x 3) = 3x + 6

2x 6 = 3x + 6

2x 3x = 6 + 6

-x = 12

x = -12

6. x/2 + 3 = 7

x/2 = 7 3

x/2 = 4

x = 4 2

x = 8

7. 3(x 2) 2x = 5

3x 6 2x = 5

x 6 = 5

x = 5 + 6

x = 11

8. 2x 5 = 3(x + 2)

2x 5 = 3x + 6

2x 3x = 6 + 5

-x = 11

x = -11

9. x + 4 = 2(x 1) + 3

x + 4 = 2x 2 + 3

x + 4 = 2x + 1

x 2x = 1 4

-x = -3

x = 3

10. 5x 3 = 2(x + 1) 7

5x 3 = 2x + 2 7

5x 2x = -5 + 3

3x = -2

x = -2 / 3

x = -0.666...

请注意，解答过程中要确保每一步的运算都是正确的。