Автор - РОМАЗ

(х-2)/5+(2х-5)/4-(1-4х)/20=4-х

Ответ

Автор - MashaBaggins
 frac{(x-2)}{5}+ frac{(2x-5)}{4} - frac{(1-4x)}{20}=(4-x)
4(x-2)+5(2x-5)-(1-4x)=20(4-x)
4x-8+10x-25-1+4x=80-20x
4x+10x+4x+20x=80+8+25+1
38x=114
x=3

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