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2x-5y=8. X-5y=-2 solve the system of equations help
asked
Dec 25, 2018
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3
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2x-5y=8. X-5y=-2 solve the system of equations help
Mathematics
middle-school
Atsyplenkov
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Atsyplenkov
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2
Answers
2
votes
For your first one :
2x−
5y
=8
2x
−
5y
+
5y
=
8+
5y
2x
=
5y
+8
2x
2
=
5y
+8
2
x=
52
y
+
4
For your second one :
x−
5y
=
−2
x=
5y
−2
x=
5y
−
2
Hoped I helped!
Bortdc
answered
Dec 28, 2018
by
Bortdc
6.9k
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5
votes
Using subtraction
2x - 5y =8
x-5y = -2
2x -x -5y -(-5y)= 8 -(-2)
x+0y = 10
x=10
Using the value of x, plug it back into one of the original equations
x-5y =-2
(10)-5y = -2
-5y = -2-10
5y=12
y= 12/5
hence the solution is
x=10
y= 12/5
(10, 12/5)
SimUser
answered
Dec 29, 2018
by
SimUser
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