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23 February, 16:46

Wich method would be the simplest way to solve the system 7X+5y=19 - 7X-2y=-16. A - graphing B - substitution C - elemination D - distributive?

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  1. 23 February, 18:57
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    C - elemination or reduction

    Method of elimination or reduction

    Adding two equations is to obtain a new equation whose right (left) member is the sum of the right (left) members of the equations that are added together.

    7X+5y=19

    -7X-2y=-16.

    Adding two equations

    3y=3 - - - > y=1

    then

    7x+5 (1) = 19

    7x=19-5

    x=14/7=2
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