Solve each system of linear equations by elimination. 5x-y=7 4x+8y=-12​

Question

Solve each system of linear equations by elimination. 5x-y=7 4x+8y=-12​

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Kennedy 6 mins 2021-12-31T01:39:06+00:00 1 Answer 0 views 0

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    2021-12-31T01:40:24+00:00

    Answer:

    Step-by-step explanation:

    hello :

    5x-y=7….(*)

    4x+8y=-12​…(**)

    multiply (*) by 8 : 40x-8y =56  …(***)

    add(**) and (***) : 44x = 44  so : x = 1

    put this value in (*) : 5(1)-y = 7

    y = 5-7 = -2

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45:7+7-4:2-5:5*4+35:2 =? ( )