brentsway1
brentsway1
13-01-2014
Mathematics
Answered
solve using elimination, 2x+5y=2 3x-5y=53
Answer :
Аноним
Аноним
13-01-2014
2x + 5y =2
(+) 3x - 5y =53
-------------------------
5x + 0 = 55
Then finish it.
5x = 55
x = 11
Substitute x = 11,
2(11) + 5y = 2
22 - 2 + 5y = 0
20 + 5y = 0
5y = -20
y= -4
Answer Link
vivindalka
vivindalka
13-01-2014
2x+5y=2
3x-5y=53
---------------
+
2x+3x=2+53
5x=55 / : 5
x=11
x=11
3x-5y=53
x=11
3*11-5y=53
x=11
33-5y=53
x=11
-5y=53-33
x=11
-5y=20 / : (-5)
x=11
y=-4
Answer Link
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