Respuesta:
3)
(X)+(4x+10)+(x-10)=180
6x=180
X=30
4)
2x+40=70 entonces 2x=30,x=15
5)
70+(x+20)=4x
90+x=4x
90=3x
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Respuesta:
3)
(X)+(4x+10)+(x-10)=180
6x=180
X=30
4)
2x+40=70 entonces 2x=30,x=15
5)
70+(x+20)=4x
90+x=4x
90=3x
X=30