Answer:
$3.90
Step-by-step explanation:
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Answer:
The solution set is (-20/9, -95/9)
Step-by-step explanation:
To solve using the substitution method, start by solving the second equation for y.
1/3y = 7/3x + 5/3
y = 7x + 5
Now that we have this, we can plug it in for y in the first equation. Then we can solve for x.
-4x - 2(7x + 5) = 30
-4x - 14x - 10 = 30
-18x - 10 = 30
-18x = 40
x = -20/9
Now that we have the value of x, we can solve for y by inputting the x value into either equation.
-4x - 2y = 30
-4(-20/9) - 2y = 30
80/9 - 2y = 30
80/9 - 2y = 270/9
-2y = 190/9
y = -95/9
For the first: 3 pounds between 6 people = 3/6 = 1/2 lb/person.
For the second: 1.5 pounds between 6 people = 1.5/6 = 1/4 lb/person.
For the third: 3 6/7 pounds between 6 people = (27/7)/6 = 9/14 lb/person.
For the last: 3 3/4 pounds between 6 people = (15/4)/6 = 5/8 lb/person.
