Ask Question
27 June, 08:30

Find the solution to the system of equations: x + 3y = 7

and 2x + 4y = 8

1. Isolate x in the first equation:

2. Substitute the value for x into the second equation:

3. Solve for y

x = 7 - 3y

2 (7 - 3y) + 4y = 8

14 - 6y + 4y = 8

14 - 2y = 8

-2y = - 6

y = 3

x + 3 (3) = 7

4. Substitute y into either original equation:

5. Write the solution as an ordered pair:

+1
Answers (1)
  1. 27 June, 08:53
    0
    (-2,3)

    Step-by-step explanation:

    Doing it the way you did and working out the problem you substituted 3 into, x+3 (3) = 7, 3 (3) is 9 and then you subtract 9 from both sides.

    7-9=-2

    x=-2

    Then all you have to do is put it into ordered pairs.

    (x, y)

    (-2,3)
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Find the solution to the system of equations: x + 3y = 7 and 2x + 4y = 8 1. Isolate x in the first equation: 2. Substitute the value for x ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers