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23-01-2018
Mathematics

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substitute

y=x+3
y=2x+1

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23-01-2018

x = 2, because
2x+1=x+3 and we cancel out one of the x's' on the left and remove the x on the right side, which gets us x+1=3, and then subtract 1 from both sides, and it equals
x=2.

Hope this helps and have a nice day:)

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