Let the unknown number be x.
6x + 8 = 9x
-3x = -8
x = 8/3
The number is 8/3 or 2 2/3
In 4 days, because 5 x 4 = $20
30 + 20 = $50
9 x 4 = $36
36 + 14 = $50
4 was multiplied then added in order to find out Erins, and Andres.
Answer:
Value of x is used to consider unknown value.
Step-by-step explanation:
Value of x is used to consider unknown value. The letter “x” is commonly used in algebra to indicate an unknown value. It is referred to as a “variable” or, in some cases, a “unknown.” In x + 2 = 7, x is a variable.