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
r = 4.8
Step-by-step explanation:
2.3 + r = 7.1
r + 2.3 = 7.1
r = 7.1 - 2.3
