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Question :

–8+2(2b–3)=–6+10b–8b

解方程

b = 4

求值

- 8 + 2 (2 b - 3) = - 6 + 10 b - 8 b

把各项相减

More Steps

求值

10 b - 8 b

通过计算同类项系数的和或差来合并同类项

(10 - 8) b

减去数字

2 b

- 8 + 2 (2 b - 3) = - 6 + 2 b

将表达式移到左侧

- 8 + 2 (2 b - 3) - (- 6 + 2 b) = 0

计算总和或差值

More Steps

求值

- 8 + 2 (2 b - 3) - (- 6 + 2 b)

如果括号外出现负号或减号，请删除括号并更改括号内每个术语的符号

- 8 + 2 (2 b - 3) + 6 - 2 b

把这些数相加

- 2 + 2 (2 b - 3) - 2 b

- 2 + 2 (2 b - 3) - 2 b = 0

计算总和或差值

More Steps

求值

- 2 + 2 (2 b - 3) - 2 b

展开表达式

More Steps

计算

2 (2 b - 3)

应用分配属性

2 \times 2 b - 2 \times 3

乘以数字

4 b - 2 \times 3

乘以数字

4 b - 6

- 2 + 4 b - 6 - 2 b

减去数字

- 8 + 4 b - 2 b

把各项相减

More Steps

求值

4 b - 2 b

通过计算同类项系数的和或差来合并同类项

(4 - 2) b

减去数字

2 b

- 8 + 2 b

- 8 + 2 b = 0

将常数移至右侧并更改其符号

2 b = 0 + 8

删除 0 不会更改值，因此将其从表达式中删除

2 b = 8

两边同时除以

\frac{2 b}{2} = \frac{8}{2}

把这些数相除

b = \frac{8}{2}

Solution

More Steps

求值

\frac{8}{2}

化简数字

\frac{4}{1}

计算

4

b = 4

Show Solution

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Frequently Asked Questions

$求解 b$ \(–8+2(2b–3)=–6+10b–8b\)

$b = 4$

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