4x + y =14 5x+6y=27 Cross multiplication

Question

4x + y =14
5x+6y=27
Cross multiplication

in progress 0
Sadie 1 week 2021-09-09T15:38:32+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-09-09T15:39:37+00:00

    4x + y = 14 \:  \:  \:  \: i)

    5x + 6y = 27 \:  \:  \:  \: ii)

    multply 5 in i) equation and in ii) by 4.

    20x + 5y = 70

    20x + 24y = 108

    by solving it

    5y - 24y = 70 - 108

     - 19y =  - 38

    y = 2

    by putting the valu of y=2 in equation i)

    4x + y = 14

    4x + 2 = 14

    4x = 12

    x = 3

    Therefore

    (x = 3 \: and \: y = 2)

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )