Ask Question
4 February, 08:57

What is the answer to

[x+3y=5

[2x-y=-4

+4
Answers (2)
  1. 4 February, 09:00
    0
    x + 3y = 5 = > x = 5 - 3y

    2x - y = - 4

    Subs x

    2. (5 - 3y) - y = - 4

    10 - 6y - y = - 4

    10 - 7y = - 4

    10 + 4 = 7y

    y = 14/7

    y = 2

    Subs y

    2x - y = - 4

    2x - 2 = - 4

    2x = - 4 + 2

    2x = - 2

    x = - 2/2

    x = - 1
  2. 4 February, 09:09
    0
    y=2

    x=-1

    Step-by-step explanation:

    2x-y = - 4 (1)

    x+3y=5 (2)

    x-4y=-9 (move the 4 to rhs)

    x=4y-9

    sub the x equation into (2)

    4y-9+3y=5

    7y=14

    y=2

    sub y into equation (1)

    2x-2=-4

    2x=-2

    x=-1
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “What is the answer to [x+3y=5 [2x-y=-4 ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers