Question

解方程 要求：要有过程和答案

1.2x％=13/40
2.3/4x-5x％=17.5

Answer 1

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Answer 2

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