x+y=3 4x-y=2 find the value of x and y
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Answered by
1
add both eqn
x+y=3
4x-y=2
-----------
5x=5
x=1
& by putting the value of x in eqn 1st
1+y=3
y=2
x+y=3
4x-y=2
-----------
5x=5
x=1
& by putting the value of x in eqn 1st
1+y=3
y=2
namo17:
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Answered by
1
Given Equations are x + y = 3, 4x - y = 2.
(1) x + y = 3.
x = 3 - y. --------------- (1)
(2) 4x - y = 2.
Substitute (1) in (2), we get
4(3 - y) - y = 2
12 - 4y - y = 2
12 - 5y = 2
-5y = 2 - 12
-5y = -10
y = 10/5
y = 2.
Substitute y = 2 in (1), we get
x = 3 - y
x = 3 - 2
x = 1.
Therefore the value of x = 1 and y = 2.
Hope this helps!
(1) x + y = 3.
x = 3 - y. --------------- (1)
(2) 4x - y = 2.
Substitute (1) in (2), we get
4(3 - y) - y = 2
12 - 4y - y = 2
12 - 5y = 2
-5y = 2 - 12
-5y = -10
y = 10/5
y = 2.
Substitute y = 2 in (1), we get
x = 3 - y
x = 3 - 2
x = 1.
Therefore the value of x = 1 and y = 2.
Hope this helps!
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