Question

D)25p - 49 = R12p + 68 = R​

Answer 1

Ответ:

р = 9

R = 176

Пошаговое объяснение:

25p - 49 = R

12p + 68 = R​

Левые части двух уравнений равны. Значит, можем правые их части приравнять друг к другу, составив уравнение относительно p :

25p - 49 = 12p + 68  

25p - 12p = 68 + 49  

13p = 117  

p = 117 : 13

р = 9  → подставим в каждое из двух уравнений значение p и вычислим значение R:

25*9 - 49 = R → 225 - 49 = R →  R = 176

12*9 + 68 = R → 108 + 68 = R → R = 176

Answer 2

It looks like you've provided an equation with two variables, p and R, along with two expressions. To solve for p and R, you'll need two equations since you have two variables. Let's break down the equation:

1. 25p - 49 = R
2. 12p + 68 = R

We have a system of two linear equations. We can use either the substitution method or the elimination method to solve for p and R. I'll use the elimination method here:

First, let's isolate R in both equations:

From equation (1): R = 25p - 49

From equation (2): R = 12p + 68

Now, since both expressions equal R, we can set them equal to each other:

25p - 49 = 12p + 68

Next, let's isolate p:

25p - 12p = 68 + 49

13p = 117

Now, divide both sides by 13 to find the value of p:

p = 117 / 13 p = 9

Now that we have the value of p, we can substitute it back into either equation (1) or (2) to find R. Let's use equation (1):

R = 25p - 49 R = 25 * 9 - 49 R = 225 - 49 R = 176

So, the solutions to the system of equations are: p = 9 R = 176