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25 March, 23:01

5x - 2y = 1

x + 3y = - 7

How to solve by substitution

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Answers (1)
  1. 26 March, 00:04
    0
    Step-by-step explanation:

    substitute x for 3 and y for 7

    5*3-2y=1

    15-2*7=1

    15-14=1

    substitute y for - 5 and x for 8

    8+3*-5=-7

    8+-15=-7
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