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20 October, 14:11

I need 10x+3y=19 and y=2x+5 solved algebraically

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  1. 20 October, 15:00
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    Y=2x+5

    sub 2x+5 for y in other equaiton

    10x+3 (2x+5) = 19

    distribute

    10x+6x+15=19

    minus 15 from both sides

    16x=4

    divide both sides by 16

    x=1/4

    sub back

    y=2x+5

    y=2 (1/4) + 5

    y=1/2+5

    y=5.5=11/2

    solution is (1/4,11/2) or in decimal, (0.25,5.5)
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