解方程 要求：1.2x％=13/402.3/4x-5x％=17.5

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/07 17:00:13

解方程 要求：1.2x％=13/402.3/4x-5x％=17.5
解方程 要求：
1.2x％=13/40
2.3/4x-5x％=17.5

解方程 要求：1.2x％=13/402.3/4x-5x％=17.5
1.2x％=13/40
2x/100=13/40
x/50=13/40
x=13/40÷1/50
x=16.25
2.3/4x-5x％=17.5
3/4x-5/100x=17.5
0.75x-0.05x=17.5
0.7x=17.5
x=17.5÷0.7
x=25

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