1. x-y=1 x+y=-5 2. x-4y=10 2x+y=2 3. -5x+y=0 x+y=6 4. y=6-2x y=4 5. 2y=16 4x

Question

1. x-y=1
x+y=-5
2. x-4y=10
2x+y=2
3. -5x+y=0
x+y=6
4. y=6-2x
y=4
5. 2y=16
4x-y= 4
6. x=y -4
3x+y=12
7. y- 2x=-6
5x-y= 9
8. 3y+x= 2
y-x=-6

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Đan Thu 3 months 2021-07-25T02:23:50+00:00 2 Answers 1 views 0

Answers ( )

    0
    2021-07-25T02:24:52+00:00

    Answer:

    1.) (y+1)+y=-5

    2y=-6

    y=-3

    x+(-3)=-5

    x=-2

    plug in to check if it works

    2.) 2(4y+10)+y=2

    9y+20=2

    9y=-18

    y=-2

    x-4(-2)=10

    x+8=10

    x=2

    3.) -5(-y+6)+y=0

    5y-30=0

    5y=30

    y=6

    x+(6)=6

    x=0

    4.) 4=6-2x

    -2=2x

    x=-1

    y=6-2(-1)

    y=8

    5.) 4x-(8)=4

    4x=12

    x=3

    4(3)-y=4

    12-y=4

    -y=-8

    y=8

    6.) 3(y-4)+y=12

    4y-12=12

    4y=24

    y=6

    x=6-4

    x=2

    7.) 5x-2x-6=9

    3x=15

    x=5

    5(5)-y=9

    25-y=9

    -y=-16

    y=16

    8.)3(x-6)+x=2

    4x-18=2

    4x=20

    x=5

    y-5=-6

    y=-1

    hope this helped :)) also make sure to plug the x and y back into both equations :))

    0
    2021-07-25T02:25:01+00:00

    Answer:

    what is the question write it in thecomments and ill answer

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