solve by cross multiplication method 7x-y=23 8x+3y=18​

Question

solve by cross multiplication method
7x-y=23
8x+3y=18​

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Sarah 3 weeks 2021-09-04T01:51:40+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-04T01:52:40+00:00

    7x-y =23 ——-(1)

    8x+3y=18——–(2)

    Multiplying EQ 1 by 3 and EQ 2 by 1

    We get

    21x-3y =69—–(4)

    8x+3y=18――――(5)

    add (3) and (4)

    Your solution

    x=3

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    I hope this will help you

    0
    2021-09-04T01:52:41+00:00

    Step-by-step explanation:

    7x-y=23 –(1)

    8x+3y=18 –(2)

    Multiplying EQ 1 by 3 and EQ 2 by 1, we get

    21x-3y=69 –(3)

    8x+3y=18 –(4)

    Adding EQ 3rd and 4th

    29x=87

    x = 3

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