(4)
5m-3n=19.......(I)
5m-3n=19.......(I)m-6n=-7.......(ii)
By multiplying the second equation by 5
5m-30n=-35
By subtracting the first from the third equation,
-27n=-54
n=2
m=5
(5)
5x+2y=-3
x+5y=4
5x+25y=20
By subtracting the first equation from the third equation,
23y=23
y=1
x=-1
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Answers & Comments
(4)
5m-3n=19.......(I)
5m-3n=19.......(I)m-6n=-7.......(ii)
By multiplying the second equation by 5
5m-30n=-35
By subtracting the first from the third equation,
-27n=-54
n=2
m=5
(5)
5x+2y=-3
x+5y=4
By multiplying the second equation by 5
5x+25y=20
By subtracting the first equation from the third equation,
23y=23
y=1
x=-1