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18 August, 22:01

3x+6y=12

x + 5y=10

x = 10 - 5y

3 (10 - 5y) + 6y=12

30-15y+6y=12

30-9y = 12

-9y=-18

y=2

Joey has to solve the system of equations using substitution. He had completed the work shown. What should be his next step

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Answers (1)
  1. 18 August, 22:31
    0
    His work needs to change his work from the beginning, switching the 10 to 9 because 12-3=9
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