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17 September, 15:40

Find the solution to the systems of equation

3x-2y=-9

4x+3y22

+4
Answers (1)
  1. 17 September, 15:43
    0
    x = 1 and y = 6

    Step-by-step explanation:

    3x - 2y = - 9 ... eqn 1

    4x + 3y = 22 ... eqn 2

    to eleminate y, multiply eqn 1 by 3 and eqn 2 by 2

    (3x - 2y = - 9) * 3

    (4x + 3y = 22) * 2

    9x - 6y = - 27 ... eqn 3

    8x + 6y = 44 ... eqn 4

    Add eqn 3 and 4 together and we get

    17x = 17

    x = 17/17

    x = 1

    To get y, substitute 1 for x in any of the eqns

    taking eqn 4

    8 (1) + 6y = 44

    8 + 6y = 44

    6y = 44 - 8

    6y = 36

    y = 36/6

    y = 6
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