Respuesta:
1)3x+19=100
3x=100-19
3x=81
x=81/3
x=27
2)2x+x+50=125
3x+50=125
3x=125-50
3x=75
x=75/3
x=25
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Respuesta:
1)3x+19=100
3x=100-19
3x=81
x=81/3
x=27
2)2x+x+50=125
3x+50=125
3x=125-50
3x=75
x=75/3
x=25