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26 March, 10:51

Solve the system of equations by elimination.

3x+4y=31

2x-4y=-6

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Answers (1)
  1. 26 March, 11:05
    0
    Hello,

    3x+4y=31 = = >4y=31-3x

    2x-4y=-6==>2x - (31-3x) = - 6==>5x=-6+31==>5x=25

    ==>x=5 and y = (31-3*5) / 4=4
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