Question

278,74-(6,5b-b)=276,84

Answer 1

$278.74 - (6.5b - b) = 276.84 \\ - 5.5b = 276.84 - 278.74 \\ - 5.5b = - 1.9 \\ b = \frac{19}{55} = 0.34 \\ b = 0.34$

Answer 2

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

278,74 - (6,5b - b) = 276,84

First, let's combine like terms within the parentheses:

278,74 - (6,5b - b) = 278,74 - 5,5b

Next, distribute the negative sign inside the parentheses:

278,74 - 5,5b = 276,84

Now, let's isolate the variable by moving the constant term to the other side:

278,74 - 276,84 = 5,5b

Subtracting the numbers:

1,9 = 5,5b

Finally, solve for b by dividing both sides by 5,5:

1,9 / 5,5 = b

b ≈ 0.345

So, the solution to the equation is b ≈ 0.345.