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6 November, 10:25

2x + y = 7

y = x + 1

When the expression x+1 is substituted in for y in the first equation, the result is

2x + 1 = 7

x + 1 = 7

3x + 1 = 7

+3
Answers (1)
  1. 6 November, 10:48
    0
    Answer: 3x + 1 = 7

    Step-by-step explanation:

    2x + y = 7

    substitute x + 1 for y

    2x + (x + 1) = 7

    2x + x + 1 = 7

    3x + 1 = 7
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