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30 May, 13:02

Us the substitution method:

x+1/9y=11

18x+2y=90

+1
Answers (1)
  1. 30 May, 16:26
    0
    To use it, we must solve for 1 variable

    it seems to be that they want us to solve for x in firsr equation

    x+1/9y=11

    minus 1/9y from both sides

    x=11-1/9y

    sub 11-1/9y for x in other equation

    18 (11-1/9y) + 2y=90

    distribute

    198-2y+2y=90

    198=90

    false

    therefor there is no solution

    (if we were to graph them they would be paraalell, if we rewrote them, they look like this: 18x+2y=192 and 18x+2y=90, obviously, there is no solution)

    answer is no solution
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