Geometry
posted by ...... .
1.)
9 + 4r = 4r  3  6
2.)
6x  2x + 8 = x + 5
3.)
4n + 5n + 15 = 5n + 7n

9 + 4r = 4r  3  6
0 = 0
6x  2x + 8 = x + 5
4x + 8 = x + 5
3x = 5  8
3x = 3
x = ?
I'll be glad to check your answer for the last problem. 
on the last one its the only one that i didn't get the others im just checking if i got them right.

I'm sorry you didn't post your answers to the first two problems.

oh sorry i forgot.