5x+5=3
5x=-2
X=-2/5
Alternative form is x=-0.4
        
             
        
        
        
Answer: d = 42/r - 6m/r
Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.
 
        
             
        
        
        
Answer:
the value of g is -4
Step-by-step explanation:

Our aim is to solve for g
multiply 10 inside the parenthesis

Now combine like terms 
Subtract 5g from both sides


Divide both sides by -1

 
        
             
        
        
        
Answer:

Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form  or
 or 
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
Let
m ----> the distance in miles (y-coordinate)
h ----> the time in hours (x-coordinate)
In this problem the constant of proportionality k is given and is equal to
 ----> the speed
 ----> the speed
substitute 

 
        
             
        
        
        
Answer:
$16
Step-by-step explanation:
Let his weekly allowance = x
Amount spent playing golf = x / 2
Amount earned for cleaning car = $4
Final amount at hand = $12
Mathematically ;
x/2 + 4 = 12
x/2 = 12 - 4
x/2 = 8
x = 2 * 8
x = $16
Weekly allowance = $16