Question

1-0,5(1-y)=0,2(y+1)в ответе не может быть дроба​

Answer 1

Ответ:

1-0,5(1-y)=0,2(y+1)

1-0,5+0,5y=0,2y+0,2

0,5y-0,2y=0,2-1+0,5

0,3y= -0.3

y= -1

Answer 2

To solve the equation and obtain an answer that does not involve fractions, let's simplify the equation step by step:

1 - 0.5(1 - y) = 0.2(y + 1)

First, distribute the 0.5:

1 - 0.5 + 0.5y = 0.2(y + 1)

Combine like terms:

0.5y + 0.5 = 0.2y + 0.2

Now, subtract 0.2y from both sides:

0.5y - 0.2y + 0.5 = 0.2

Combine like terms again:

0.3y + 0.5 = 0.2

Next, subtract 0.5 from both sides:

0.3y + 0.5 - 0.5 = 0.2 - 0.5

Simplify:

0.3y = -0.3

Finally, divide both sides by 0.3:

(0.3y)/0.3 = -0.3/0.3

Simplify further:

y = -1

Therefore, the solution to the equation 1 - 0.5(1 - y) = 0.2(y + 1) without involving fractions is y = -1.