Respuesta:
1) x = 125/13
2) x = 0
3) x = - 245/55
Explicación paso a paso:
1)
13x = 125
x = 125/13
2)
50 = -3x + 50
-3x = 50 - 50
-3x = 0
x = 0
3)
25x - 80x - 2x + 2x = 200+45
-55x = 245
x = - 245/55
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Respuesta:
1) x = 125/13
2) x = 0
3) x = - 245/55
Explicación paso a paso:
1)
13x = 125
x = 125/13
2)
50 = -3x + 50
-3x = 50 - 50
-3x = 0
x = 0
3)
25x - 80x - 2x + 2x = 200+45
-55x = 245
x = - 245/55