5x-7y=4 -x+2y=-3 resolver por metodo de igualacion
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4
5x - 7y = 4 -x + 2y = -3
5x = 4 +7y -x = -3 - 2y
x = 4 + 7y x = 3 + 2y
5
Después de despejar las dos x, se igualan
4 + 7y = +3 +2y
5
4 + 7y = 5 (+3 +2y)
4 + 7y = 15 + 10y
7y -10y = 15 - 4
-3y = 11
y = - 11/3
5x -7y = 4
5x -7 (-11/3) = 4
5x + 77/3 = 4
5x = 4 - 77/3
5x = 12/3 - 77/3
5x = -65/3
5x = -65/3/5/1
5x = -65/15
x = -13/3
Comprobación:
5x -7y = 4
5 (-13/3) - 7(-11/3) = 4
-65/3 + 77/3 = 4
12/3 = 4
4 = 4
5x = 4 +7y -x = -3 - 2y
x = 4 + 7y x = 3 + 2y
5
Después de despejar las dos x, se igualan
4 + 7y = +3 +2y
5
4 + 7y = 5 (+3 +2y)
4 + 7y = 15 + 10y
7y -10y = 15 - 4
-3y = 11
y = - 11/3
5x -7y = 4
5x -7 (-11/3) = 4
5x + 77/3 = 4
5x = 4 - 77/3
5x = 12/3 - 77/3
5x = -65/3
5x = -65/3/5/1
5x = -65/15
x = -13/3
Comprobación:
5x -7y = 4
5 (-13/3) - 7(-11/3) = 4
-65/3 + 77/3 = 4
12/3 = 4
4 = 4
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