Respuesta:
x = 10 ; y = -0.25
Explicación paso a paso:
x + 4y = 9 /*1
x - 4y = 11 /*1
valor x
2x = 20
x = 20/2
x = 10
valor y
x + 4y = 9
10 + 4y = 9
4y = 9 - 10
4y = -1 /4
y = -0.25
comprobación
10 + 4 * -0.25 = 9
10 - 1 = 9
9 = 9 ✅✅
x - 4y = 11
10 - 4 * -0.25 = 11
10 + 1 = 11
11 = 11 ✅✅
espero te sirva:) <3
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Respuesta:
x = 10 ; y = -0.25
Explicación paso a paso:
x + 4y = 9 /*1
x - 4y = 11 /*1
valor x
2x = 20
x = 20/2
x = 10
valor y
x + 4y = 9
10 + 4y = 9
4y = 9 - 10
4y = -1 /4
y = -0.25
comprobación
x + 4y = 9
10 + 4 * -0.25 = 9
10 - 1 = 9
9 = 9 ✅✅
x - 4y = 11
10 - 4 * -0.25 = 11
10 + 1 = 11
11 = 11 ✅✅
espero te sirva:) <3