Answer:
<h2>

</h2><h2>plsss mar it as a brilliant answer</h2><h2>and like it ❤</h2>
Answer:
2.3+r=7.1
move all terms to the left:
2.3+r-(7.1)=0
add all the numbers together, and all the variables
r-4.8=0
move all terms containing r to the left, all other terms to the right
r=4.8 is the answer
zero-dimensional - point
one-dimensional figures - ray, segment, line
Answer: OPTION B.
Step-by-step explanation:
Given the following equation:

These are the steps to solve it:
<em>Step 1</em>
Add like terms on the left side of the equation:

<em>Step 2</em>
Apply Addition property of equality, which states that: 
Then, we can add 25 to both sides of the equation:

<em>Step 3</em>
Applying the Subtraction property of equality, we can subtract
from both sides:

<em>Step 4</em>
Applying the Division property of equality, we can both sides of the equation by 3. Then:

C. Infinitely many of solutions