themajesty9898 themajesty9898

26-02-2018
Mathematics

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Substitution. (6 points)
3x + 2y = 11
y = 5x - 1

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demariaa01 demariaa01

26-02-2018

3x+2y=11
y=5x-1

Substitute the y in the first equation:
3x+2(5x-1)=11
y=5x-1

3x+10x-2=11
y=5x-1

13x=13
y=5x-1

Now substitute the x to find the y:
x=1
y=5-1=4

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