Solve the following system of equations. What is the x-value of the solution? 3x + 2y = 7 x – y + 1 = 0 2 4 0 1

Question

Solve the following system of equations. What is the x-value of the solution? 3x + 2y = 7 x – y + 1 = 0 2 4 0 1

in progress 0
Genesis 2 weeks 2021-09-28T03:55:35+00:00 2 Answers 0

Answers ( )

    0
    2021-09-28T03:56:54+00:00

    Answer:

    x=1 y=2

    (1,2)

    Step-by-step explanation:

    3x + 2y = 7

    x – y + 1 = 0

    Multiply the second equation by 2 so we can eliminate y

    2(x – y + 1 )= 0*2

    2x-2y+2 =0

    Add this to the first equation

    3x + 2y = 7

    2x -2y +2 =0

    ————————–

    5x +2 = 7

    Subtract 2 from each side

    5x+2-2=7-2

    5x =5

    Divide each side by 5

    5x/5 =5/5

    x=1

    Now substitute into the second equation to find y

    x – y + 1 = 0

    1-y+1 =0

    2-y =0

    Add y to each side

    2-y+y=0+y

    2=y

    0
    2021-09-28T03:57:32+00:00

    Answer:

    x=1

    Step-by-step explanation:

    3x+2y=7

    x-y+1=0

    3x+2y=7

    x-y=-1 /*2

    3x+2y=7…. (1)

    2x-2y=-2…. (2)

    (1)+(2) 5x=5, x=5/5, x=1

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )