Log0.3(5-x)=-1 помогите

Question

Log0.3(5-x)=-1
помогите

Answer 1

Log0.3(5-x)=-1log0.3 0.3
log0.3(5-x)=log0.3 0.3^-1
5-x=3.33333
х=3.33333-5
х=-1.66667
х=-1.7