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19 July, 13:07

Solve for x?

2x + y = 7

x - y = 5

+3
Answers (2)
  1. 19 July, 13:19
    0
    Given 2x+y=7 ... 1

    x-y=5 ... 2

    put x=5+y in 1

    2 (5+y) + y=7

    10+2y+y=7

    3y=-3

    y=-1

    x=5+y

    =5-1

    =4
  2. 19 July, 13:24
    0
    X=4 because the y cancel out and all your left with is 3x=12 the you divide by 3 and get 4
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