Por favor alguien que me ayude con esta tarea es para mañana por favor ayuda!!! Soy 20 pts
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Respuestas
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1.-
x -y = 2
2x-5y = 7
-2x + 2y = -4
2x - 5y = 7
-3y = 3
y = 3/-3
y = -1
x-y = 2
x-(-1) = 2
x+1 = 2
x = 2-1
x = 1
2.-
6x-5y = -10
-x -y = -2
-x = y-2
x = 2-y
(6*(2-y)) - 5y = -10
12-6y - 5y = -10
-11y = -10-12
y = -22/-11
y = 2
x = 2-y
x = 2-2
x = 0
3.-
5x-y = 9
x+y = 3
6x = 12
x = 12/6
x = 2
x+y = 3
2+y = 3
y = 3-2
y = 1
4.-
4x - 7y = 8
3x + 2y = -6
4x -7y = 8
-3x -2y = 6
x -9y = 14
x = 9y+14
3*(9y+14) + 2y = -6
27y + 42 + 2y = -6
27y+2y = -6-42
29y = -48
y = -48/29
y = -1.655
x = 9y+14
x = (9*-1.655) + 14
x = -14.89 +14
x = -0.89
5.-
-2x + 3y = 0
-5x + y = -13
-2x + 3y = 0
15x- 3y = 39
13x = 39
x = 39/13
x = 3
-5x + y = -13
y = -13 + 5*3
y = -13+15
y = 2
x -y = 2
2x-5y = 7
-2x + 2y = -4
2x - 5y = 7
-3y = 3
y = 3/-3
y = -1
x-y = 2
x-(-1) = 2
x+1 = 2
x = 2-1
x = 1
2.-
6x-5y = -10
-x -y = -2
-x = y-2
x = 2-y
(6*(2-y)) - 5y = -10
12-6y - 5y = -10
-11y = -10-12
y = -22/-11
y = 2
x = 2-y
x = 2-2
x = 0
3.-
5x-y = 9
x+y = 3
6x = 12
x = 12/6
x = 2
x+y = 3
2+y = 3
y = 3-2
y = 1
4.-
4x - 7y = 8
3x + 2y = -6
4x -7y = 8
-3x -2y = 6
x -9y = 14
x = 9y+14
3*(9y+14) + 2y = -6
27y + 42 + 2y = -6
27y+2y = -6-42
29y = -48
y = -48/29
y = -1.655
x = 9y+14
x = (9*-1.655) + 14
x = -14.89 +14
x = -0.89
5.-
-2x + 3y = 0
-5x + y = -13
-2x + 3y = 0
15x- 3y = 39
13x = 39
x = 39/13
x = 3
-5x + y = -13
y = -13 + 5*3
y = -13+15
y = 2
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