solve the equations geologically 2x-y=2 4x-y=4
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Answered by
2
[2x-2y=2] multiply by 2
add both the equation
4x-2y=4
4x-y=4
=[-y=8]
2x+8=2
2x=[-6]
x=-3
Answered by
2
2x-y=2. .........(1)
4x-y=4. ..........(2)
subtracting question 1 and 2.
2x-y=2. .........(1)
4x-y=4. ...........(2)
(-) (+) (-)
--------------------
-2x=-2
x=1
putting the value x=1 in eq (1).
2x-y=2.
2×1-y=2.
y=-1.
x=1.
4x-y=4. ..........(2)
subtracting question 1 and 2.
2x-y=2. .........(1)
4x-y=4. ...........(2)
(-) (+) (-)
--------------------
-2x=-2
x=1
putting the value x=1 in eq (1).
2x-y=2.
2×1-y=2.
y=-1.
x=1.
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