2x + 3y = 8
2x = 8 - 3y
x = (8 - 3y)/2
3x - y = -10
3x = -10 + y
x = (-10 +y)/3
(8 - 3y)/2 = (-10 +y)/3
3(8 - 3y) = 2 (-10 + y)
24 - 9y = -20 + 2y
-9y - 2y = -20 - 24
-11y = -44
y = 4
x = (8 - 3(4))/2
x = (8 - 12)/2
x = -4 / 2
x = -2
La respuesta correcta es la primera
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2x + 3y = 8
2x = 8 - 3y
x = (8 - 3y)/2
3x - y = -10
3x = -10 + y
x = (-10 +y)/3
(8 - 3y)/2 = (-10 +y)/3
3(8 - 3y) = 2 (-10 + y)
24 - 9y = -20 + 2y
-9y - 2y = -20 - 24
-11y = -44
y = 4
x = (8 - 3y)/2
x = (8 - 3(4))/2
x = (8 - 12)/2
x = -4 / 2
x = -2
La respuesta correcta es la primera