Respuesta:
Espero haberte ayudado
Explicación paso a paso:
1) 9x + 3x =180
12x =180
X = 180/12
X =15
2) 180-140= 40
X =40
3) 5x - 10 = 3x +10
5x - 3x = 10+10
2x = 20
X = 20/2
X = 10
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Respuesta:
Espero haberte ayudado
Explicación paso a paso:
1) 9x + 3x =180
12x =180
X = 180/12
X =15
2) 180-140= 40
X =40
3) 5x - 10 = 3x +10
5x - 3x = 10+10
2x = 20
X = 20/2
X = 10