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y=4x-24
Sustituimos en la segunda
5x+(4x-24)=48
5x+4x=48+24
9x=72
x= 72/9=8
Cuando iniciamos mencionamos que
y=4x-24
Puees sustituimos
y=4(8)-24
y=32-24
y=8
Pasa por (8,8) inciso B