9*(x-5)+4*(6-x)=3+3*(x-20)-2x

 

9*(х-5)+4*(6-х)=3+3*(х-20)-2х

9х-45+24-4х=3+3х-60-2х

9х-4х-3х+2х=45-24+3-60

4х=-36

х=-36:4

х=-9

9*(x-5)+4*(6-x)=3+3*(x-20)-2x

9х-45+24-4х=3+3х-60-2х

9х-4х-3х+2х=45-24+3-60

4х=-36

х=-9

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