Question

What is the value of m in the following equation: 7 + 2.3m = 20.25 - 3m?

2.5

5.2

2.3

20.25

Answer 1

7 + 2.3m = 20.25 - 3 -- subtract 7 from both sides
2.3m = 20.25 - 3 + 7
2.3m = 24.25 -- divide by 2.3
m = 24.25/2.3
m = 10.54

Is the problem written correctly or is there supposed to be an m term on the right side ?

Answer 2

This is what I was wondering, because I cant get any of the answers listed...

Answer 3

@texaschic101 I'm sorry, there is supposed to be an m on the right side.

Answer 4

So it's What is the value of m in the following equation: 7 + 2.3m = 20.25 - 3m?

Answer 5

7 + 2.3m = 20.25 - 3m -- subtract 7 from both sides
2.3m = 20.25 - 3m - 7 -- add 3m to both sides
2.3m + 3m = 20.25 - 7 -- combine like terms
5.3m = 13.25 -- divide by 5.3
m = 13.25/5.3
m = 2.5

Answer 6

Thank you @texaschic101 I like that you included your work so I can learn how to do it :)

Answer 7

glad to help :)