Question

0.88 - (5.12 + 0.08y) = 4.92y - y

Answer 1

3.92у+0.08у=-4.24

4у=-4.24

у=-1.06

Answer 2

$0,88-(5,12+0,08y)=4,92y-y$

 

$0,88-5,12-0,08y=4,92y-y$

 

$-4,24-0,08y=3,92y$

 

$-0,08y-3,92y=4,24$

 

$-4y=4,24$

 

$y=4,24:(-4)$

 

$y=-1,06$

____________________________________________________________________

$0,88-(5,12+0,08cdot(-1,06))=4,92cdot(-1,06)-(-1,06)$ (это проверка)

 

$0,88-(5,12-0,0848)=-5,2152+1,06$

 

$0,88-5,0352=-4,1552$

 

$-4,1552=-4,1552$