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21-03-2020
Mathematics

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2x + 3y = –19
–2x − y = 1

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yali81yolanda yali81yolanda

21-03-2020

The x both cancels out

So you’re left with 2y=-18 (add 3y to negative y and -19 and 1)

Divide by 2 and y equals -9

Plug in y to get x

2x + 3(-9) = -19

2x + -27 = -19

Add 27 to both sides

2x= 8

Divide by 2, x= 4

So x= 4 and y = -9

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