Just a note: D and d are different in math. However, just divide everything WITH the variable over to the other side: 12.5/2.1=d~5.95
I have to assume you mean 3x=125-21. Therefore 3x is 104. x = 104/3 = 34.667
-16
n + 13 = 21. n = 21 - 13
It is an equation and the value of x is 7
120 - 90x = 210
26 divided by 125. It equals .21
I have to assume you mean 3x=125-21. Therefore 3x is 104. x = 104/3 = 34.667
21
12
-16
n + 13 = 21. n = 21 - 13
3, 7, 21. 3x7 is the only equation that equals 21, and so these are the only factors of 21.
32
9+12
120 - 90x = 210
21
It is an equation and the value of x is 7