Respuesta:
1)2x-5+4x+15y=180
y=170-6x
2) 110 + x + y = 180
Sustituye.
110+x+170-6x=180
280-5x=180
280-180=5x
x=20
2(20)-5=35
4(20)+15=95
y=170-6(20)=50
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Verified answer
Respuesta:
1)2x-5+4x+15y=180
y=170-6x
2) 110 + x + y = 180
Sustituye.
110+x+170-6x=180
280-5x=180
280-180=5x
x=20
2(20)-5=35
4(20)+15=95
y=170-6(20)=50