1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lunna [17]
2 years ago
15

If x+y=9, and 8(x+3y)= 120, what is the value of x-y

Mathematics
1 answer:
Triss [41]2 years ago
6 0

Answer:

3

Explanation:

Apply Multiplicative Distribution Law:

{x + y =9

{8x + 24y = 120

Reduce the greatest common factor on both sides of the equation.

{x + y = 9

{x + 3y = 15

Subtract the two equations: x + y - (x +3y) = 9 - 15

Remove paranthesis: x + y - x - 3y = 9 - 15

Cancel the unknown variables: y - 3y = 9 - 15

Combine like terms: -2y=9 - 15

Calculate the sum or difference: -2y = -6

Reduce the greatest common factor on both sides of the equation: y =3

Substitute one unknown quantity into the elimination: x + 3 = 9

Rearrange unknown terms to the left side of the equation: x = 9 - 3

Calculate the sum or difference: x = 6

Write the solution set of equations: {x = 6

                                                           {y = 3

Substitute: 6 - 3

Calculate the sum or difference: 3

Answer: 3

You might be interested in
Is this a function or no
blondinia [14]

Answer:

Yes

Step-by-step explanation:

None of them repeat

4 0
3 years ago
Express the improper fraction as a mixed number in simplest form. 39 over 8
aleksandrvk [35]
The answer is 4 7/8 or 4 and 7 over 8.8 goes into 39  4 times and then you have a remainder of 7 and the denominator 8 stays the same.
7 0
3 years ago
Read 2 more answers
Explain how you know that 5/8 + 6/10 is greater than 1.
prisoha [69]
Because 5/8 + 6/10 is 49/40 and 49/40 is equal to 1 9/40
6 0
3 years ago
5a − 3
Taya2010 [7]

Answer:

4.8

Step-by-step explanation:

Multiply 5*4.8 equal 21.6

5 0
3 years ago
Maria wrote the equation of a line that has a slope of 4/3
ExtremeBDS [4]

Answer:

The equation of the line is y=4/3x+1

Step-by-step explanation:

I don't know the statement.

6 0
2 years ago
Read 2 more answers
Other questions:
  • Which shows the expression below simplified? 0.00048 ÷ (6 × 10-4)
    10·1 answer
  • The Naturally Made Bath and Body store pays $550 a month for rent and utilities. The average cost for its products to be manufac
    12·2 answers
  • Shelly found that the coefficient of determination between the age of a runner x and the runner’s finishing position y was about
    13·1 answer
  • What is the distance between the points (- 5, - 4) and (3, - 3) on a coordinate plane? Help asappp
    15·1 answer
  • Mrs. Alvarez has a piece of ribbon that is 2.65 feet long. She cuts the ribbon into 5 equal parts. Which is the best estimate of
    10·1 answer
  • URGENT HELP!! Giving Brainliest.<br><br> Can someone help me with these 4? Thank you
    5·1 answer
  • If books cost $3.50 each, how much will 3 books cost in all?
    11·1 answer
  • Complete the equation of the line through (4,-8)(4,−8)left parenthesis, 4, comma, minu
    15·1 answer
  • Decide whether the relation is a function
    7·2 answers
  • 16:12 give the answer as n:1
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!