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31 January, 11:46

X+y=7

x-y=3

2x-3y=15

3x-2y=10

+5
Answers (1)
  1. 31 January, 12:00
    0
    Step-by-step explanation:

    x+y=7 _ eqn1

    x-y=3_ eqn2

    add eqn1 and eqn2

    x+y=7

    + x-y=3

    = 2x = 10

    x=5

    x+y=7

    5+y=7

    y=7-5

    y=2 proved
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