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11 December, 16:52

Solve the simultaneous equations 7x+5y=32

3x+4y=23

+1
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  1. 11 December, 18:24
    0
    3 (7x+5y=32) and - 7 (3x+4y=23)

    To make 21x+15=96 and - 21x-28y=-161

    Then add them to be - 13y=-65

    So y=-5

    The substitute y

    3x-20=23

    3x=3

    So x=1
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