х+2х+(1:2)х+(1:4)+1=100

 

 

 

(1:2) и (1:4) это дроби

х+2х+ 1/2x+1/4+1=100

3 1/2x +1 1/4 =100

3 1/2x=100-1 1/4

3 1/2 x=98 3/4

x= 98 3/4: 3 1/2

x=395/14

x= 28 3/14

3х+1/2 х +1/4+1=100

3 1/2х = 100 - 1 1/4

3 1/2 х = 98 3/4

х= 98 3/4 : 3 1/2

х= 395/4 : 7/2

х=395/4 . 2/7

х= 395/14

х= 28 3/14

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