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Eleanor
Mathematics
4 November, 14:30
3x+y=13 5x-2y=18 Substition method
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Ayana Lambert
4 November, 14:56
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So for the first one you would do 3 (4) + 1=13 because 3 (4) = 12 12+1=13
For the second one it will be 5 (4) - 2 (1) = 18 because 5 (4) = 20 and 2 (1) = 2 and 20-2=18
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