Question

Выполните действия b/b-1-b-2/1-b

Answer 1

B/b-1-b-2/1-b
1-1-b-2-b
-2b-2

Answer 2

Calculation: b/(b-1) - (b-2)/(1-b)

To solve the given expression, let's simplify it step by step:

1. Simplify the numerator of the first fraction: b. 2. Simplify the denominator of the first fraction: (b-1). 3. Simplify the numerator of the second fraction: (b-2). 4. Simplify the denominator of the second fraction: (1-b).

Now, let's substitute these simplified values back into the expression:

b/(b-1) - (b-2)/(1-b)

= b/(b-1) - (b-2)/(-(b-1)) (1-b = -(b-1))

= b/(b-1) + (b-2)/(b-1) (Negative sign in the denominator flips the fraction)

= (b + (b-2))/(b-1) (Combine the fractions with the same denominator)

= (2b - 2)/(b-1) (Combine like terms in the numerator)

Therefore, the simplified expression is (2b - 2)/(b-1).

Please let me know if you need any further assistance!