Question

x/8 - y/5 es igual a 11/10
x/5 + y/4 es igual a -59/40

ayudenme con esto es q no entiendo , es utilizando metodo de sustitucion , gracias

Answer 1

1)x/8-y/5=11/10
2)x/5+y/4=-59/40
en 1 despejamos x
x/8-y/5=11/10
x/8=11/10+y/5
x/8=11/10+2y/10
x/8=11+2y/10
x=11+2y/10×8
x=11+2y/5×4
3)x=44+8y/5
sustituimos 3 en 2
44+8y/5/5+y/4=-59/40
44+8y/25+y/4=-59/40
176+32y/100+25y/100=-59/40
176+32y+25y/100=-59/40
176+57y=-295/2
352+114y=-295
114y=647
y=647/114
x=5096/285