SOLUTION: #1. Do you know how to solve 4r + 5r = 45 #2. Do you know how to solve 2a + 9a =88 #3. Do you know how to solve r dicided by 3 - r divided by 5 = 4 divided by 15 #4. Do you know

Algebra ->  Expressions -> SOLUTION: #1. Do you know how to solve 4r + 5r = 45 #2. Do you know how to solve 2a + 9a =88 #3. Do you know how to solve r dicided by 3 - r divided by 5 = 4 divided by 15 #4. Do you know      Log On


   

Question 450327: #1. Do you know how to solve 4r + 5r = 45
#2. Do you know how to solve 2a + 9a =88
#3. Do you know how to solve r dicided by 3 - r divided by 5 = 4 divided by 15
#4. Do you know how to solve 7c divied by 10 - c divided by 5 = 9 divied by 2
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
1)
9r=45
r=45/9
r=5
3)
r/3-r/5=4/15
5r/15-3r/15=4/15
2r/15=4/15
2r=4/15*15/1
2r=4
r=4/2
r=2