Question

2,6+12+(−1,22r)=5+2,6−3,22r

Answer 1

Ответ:

r = -3,5

Объяснение:

2,6+12+(−1,22r)=5+2,6−3,22r

2,6+12−1,22r =5+2,6−3,22r

3,22r  −1,22r =5+2,6−2,6-12

2r =5-12

2r =-7

r =-7/2

r =-3,5

Проверка

2,6+12+(−1,22*(-3,5)=5+2,6−3,22*(-3,5)

18,87 =18,87

Answer 2

To solve the equation for the variable $r$, follow these steps:

Given equation: $2.6 + 12 - 1.22r = 5 + 2.6 - 3.22r$

Step 1: Combine like terms on both sides of the equation: $14.6 - 1.22r = 7.6 - 3.22r$

Step 2: Move the terms with $r$ to one side of the equation. You can do this by adding $3.22r$ to both sides: $14.6 - 1.22r + 3.22r = 7.6 - 3.22r + 3.22r$ Simplifying: $14.6 + 2r = 7.6$

Step 3: Subtract $14.6$ from both sides to isolate the term with $r$: $2r = -7$

Step 4: Finally, solve for $r$ by dividing both sides by $2$: $r = -\frac{7}{2}$

So, the solution for the equation is $r = -\frac{7}{2}$, which is equivalent to $r = -3.5$.