For easier notation lets use: Nn=x and Nd=y
x+y=22
5x+10y=135
Multiply the first equation by 5 to get
5x+5y=110
Now you can eliminate x by subtracting the first equation from the second
5x+10y-5x-5y=135-110
5y=25
y=5
x=17
It is 20
39+1
38+2
37+3
36+4
35+5
<span>Until you get to 20+20</span>
Answer:2.5
Step-by-step explanation:
Answer:
step 1: you subtract 28 and 3 to get 5x by itself
step 2:divide 25 and 5 to solve or x
step 3: x equals 5
Step-by-step explanation:
