evelsmithrn
evelsmithrn
18-03-2015
Mathematics
Answered
Using substitution 3x-5y=11 and x-3y=1
Answer :
Panoyin
Panoyin
18-03-2015
3x - 5y = 11 ⇒ 3x - 5y = 11
1x - 3y = 1 ⇒
3x - 9y = 3
4y
=
8
4 4
y = 2
3x - 5(2) = 11
3x - 10 = 11
+10 +10
3x
=
21
3 3
x = 7
(x, y) = (7, 2)
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