Respuesta:
3. 360= 120+90+90+x
360-90-90-120=x
60=c
4. 4x+x+20= 90
4x+x= 90-20
5x= 70
x= 70/5
x= 14
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Respuesta:
3. 360= 120+90+90+x
360-90-90-120=x
60=c
4. 4x+x+20= 90
4x+x= 90-20
5x= 70
x= 70/5
x= 14