Solve the simultaneous equations x+y=3 y=3x−17

Question

Solve the simultaneous equations
x+y=3
y=3x−17

in progress 0
Thái Dương 4 years 2021-08-31T10:01:42+00:00 1 Answers 9 views 0

Answers ( )

  1. thienthanh
    0
    2021-08-31T10:02:49+00:00
    Reply

    Answer:

    x=5 , y=-2

    Step-by-step explanation:

    rearrange y=3x-17 to -3x+y=-17

    then subtract to get x or y

         x+y=3

    – (-3x+y=-17)

           4x=20

             x=20/4

             x=5

    then sub in the x value into one of the equations

    for x+y=3

        (5)+y=3

              y=3-5

              y= -2

    hope this was helpful bestie ༼ つ ◕_◕ ༽つ

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )