solve:2/x+3/y=13 and 5/x-4/y=-2by elimination and substitution method.
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using elimination method
2/x+3/y=13 × 5
5/x+4/y=-2 ×2
10/x+15/y=65 (1)
10/x+8/y= -4
(-) (-) (+)
--------------------
0+7/y = 61
[ y = 7/61]
by using substitution method
y=7/61 putting in (1)
10/x+ 915/7 = 65
10/x = 65-915/7
10/x = -65
x= -10/65
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