Answer:x=29
Step-by-step explanation:
You want to add all the like terms together so in this case 2x and x
29,30,20,8
3x=87
Divide 3 by both sides
X=29
-6n-20=-2n+4-12n
-6n-20=-14n+4
+6n +6n
-20=-8n+4
-4 -4
-24=-8n
/8 /8
n=-3
-
Answer:
1. x=11
Step-by-step explanation:
2x+5=27
Subtract 5 from both sides
2x=22
Divide 2 from both sides
x=11
Answer:
new signs are needed.
Step-by-step explanation:
Given: A 
-kilometer section of a highway is designated as a scenic byway. New signs will be placed at the beginning and end of this section and at every 
Km in between.
To find: How many new signs are needed?
Solution:
We have,
A -kilometer section of a highway is designated as a scenic byway.
New signs will be placed at the beginning and end of this section and at every Km in between.
So, there are 
signs placed, one at the beginning and one at the end.
Now, in between these signs there will be 
signs.
Hence, the total new signs that are needed is 
.
