Ask Question
5 January, 17:36

2x + 3y = 12 Dan 3x-1y=7

+1
Answers (2)
  1. 5 January, 17:59
    0
    2x+3y=12

    3y=-2x+12

    y=-2x/3+4

    3x-1y=7

    -1y=-3x+7

    y=3x-7
  2. 5 January, 19:46
    0
    2x+3y=12

    3x-y=7

    use subsituttion

    make one of the equations equal to a placeholder

    3x-y=7

    subtract 7

    3x-7-y=0

    add y

    3x-7=y

    subsisute 3x-7 for y in first equation

    2x+3 (3x-7) = 12

    2x+9x-21=12

    11x-21=12

    add 21 to both sides

    11x=33

    divide both sides by 11

    x=3

    subsitute x for 3 in any equation

    3x-7=y

    3 (3) - 7=y

    9-7=

    2=y

    x=3

    y=2
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “2x + 3y = 12 Dan 3x-1y=7 ...” 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