This was originally posted in the thread of another student.
Help please
1). 7r - 7 = 2r + 18
a) r = -5
b) r = 5
c) r = 2.2
d r = 2
0 0
posted by chic
today at 1:54pm
Answer ID 1809636
You will have the answer after you correctly solve it
7 r - 2 r = 18 + 7
so
5 r = 25
To solve this equation, you need to isolate the variable "r". Here are the steps you can follow to find the value of "r":
1. Start by grouping the terms with "r" on one side of the equation, and the constant terms on the other side. Let's subtract 2r from both sides:
7r - 2r - 7 = 2r - 2r + 18
Simplifying this equation gives you:
5r - 7 = 18
2. Next, isolate the term with "r" by moving the constant term (which is -7) to the other side of the equation. Let's add 7 to both sides:
5r - 7 + 7 = 18 + 7
Simplifying this equation gives you:
5r = 25
3. Now, to solve for "r", divide both sides of the equation by the coefficient of "r", which is 5:
(5r)/5 = 25/5
Simplifying this equation gives you:
r = 5
Therefore, the correct answer is (b) r = 5.