Chaoticsss
Chaoticsss
21-03-2020
Mathematics
contestada
2x + 3y = –19
–2x − y = 1
Respuesta :
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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