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好吧问答库 > 三括号x-7点八括号=36点九方程解

三括号x-7点八括号=36点九方程解

2025年03月15日 20:07

有4个网友回答

网友（1）：

3（X-7.8）＝36.9
解:x-7.8=36.9除3
x-7.8=12.3
x-7.8+7.8=12.3+7.8
x=20.1

网友（2）：

三括号x-7点八括号=36点九方程解
3(x-7.8)=36.9,
3x-23.4=36.9,
3x=36.9+23.4,
3x=60.3,
x=20.1.

网友（3）：

3（x-7.8）=36.9
x-7.8=12.3
x=20.1

网友（4）：

方程两边同时除以3
x=20.1

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