Answer:
- 3
Step-by-step explanation:
let n be the number , then
3n + 4 = n - 2 ( subtract n from both sides )
2n + 4 = - 2 ( subtract 4 from both sides )
2n = - 6 ( divide both sides by 2 )
n = - 3
The number is - 3
Given:
The equation is

To find:
The missing value.
Solution:
Let the missing value be k.


Using the formulae
and
.


Cancel out the common factors from both sides.

Multiply both sides by (x+1).

Therefore, the missing value is 5(x+1).
Answer:
no solution
Step-by-step explanation:
solve by elemination
18 glasses of water
3.6/.2=18