Year 9 Maths – linear equations please help Solve the pair of simultaneous equations: 3x-y=7 y=x+5 using the

Question

Year 9 Maths – linear equations please help

Solve the pair of simultaneous equations:
3x-y=7
y=x+5
using the substitution method to find the values of x and y.

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Cora 1 week 2021-09-14T01:14:22+00:00 2 Answers 0

Answers ( )

    0
    2021-09-14T01:15:29+00:00

    Answer:

    x=1 & y=6 or (1,6)

    Step-by-step explanation:

    3x-x+5=7   Substitute the 2nd equation in for y  

    2x+5=7      Do 3x-x to get 2x

    2x=2          Subtract 5 from both sides

    x=1              Divide 2 from both sides

    y=1+5          Insert 1 as x

    y=6             Add 1+5 to solve for y

    Hope this helped!  

    0
    2021-09-14T01:15:51+00:00

    X=3, Y=9
    X+Y=12
    Y=X+6

    X+X+6=12
    2X=6
    X=3

    Y=3+6=9

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