If x/5=y/3 then 3x+5y/_____
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Answered by
1
Answer:
3x+5y=9-----(1)
5x+3y=7-----(2)
multiplying eq(1) by 5 & eq(2) by 3 we get
15x+25y=45
-15x ± 9y= - 21
_____________
16y=24
y=
16
24
=
2
3
[y=
2
3
] and x=
3
9−5x
2
3
=
2
−1
Hence[x=
2
1
]& [y=
2
3
]
so x+y=
2
1
+
2
3
=2
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Answered by
0
Step-by-step explanation:
3x+5y=9----------(1)
5x+3y=7---------(2)
multiplying eq(1)by 5 &eq(2) by 3 we get
15x+25y=45
-15x +9y=-21
__________
16y=24
y=
16
24
=
2
3
(Y=
2
3
)and X =
3
9-5x
2
3
=
2
-1
Hence (x=
2
1
)& (y=
2
3
)
so x+y=
2
1
+
2
3
=2
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