@Alena211197

Alena211197

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5^х+1+5^х+5^х-1=155 помогите решить !)))...
Answer
7^х-7^х-1=6 помогите решить !!!))))...
Answer
3^2х- 2*3^2х-1-2*3^2х-2=1 помогите )))...
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