solve the following simultaneous equation by adding or subtracting the equations x-14=y; 2x-4y=16
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Answered by
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Answer:
x-y = 14 --equation 1
2x-4y = 16 -- equation 2
x-y-2x+4y = 14-16
-x+3y = -2
x = 3y+2
put X = 3y + 2 in equation one
3y+2-y = 14
2y = 12
y = 6
therfore X = 3×6+2
= 20
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Answered by
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Answer:
= x-14=y
= x-y=14 .....(1)
= 2x-4y=16........(2)
(1)×2 =2x-2y=28......(3)
(3)-(2) =
2x+2y= 28 - 2x-4y= 16
= y= 6 and x= 20
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