cjoy356 cjoy356

19-01-2020
Mathematics

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solving by the substitution method
y=3x+7
y-5x+8

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jassy667 jassy667

19-01-2020

3x+7-5x=8
-2x+7=8
-2x=1
X=-1/2
y=3(-1/2)+7
y=-1.5+7
y=5.5

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