Question 869688: X=16-4y
3x+4y=8
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website! 1 x + 4 y = 16 .............1
Total value
3 x + 4 y = 8 .............2
Eliminate y
multiply (1)by -1
Multiply (2) by 1
-1 x -4 y = -16
3 x + 4 y = 8
Add the two equations
2 x = -8
/ 2
x = -4
plug value of x in (1)
1 x + 4 y = 16
-4 + 4 y = 16
4 y = 16 + 4
4 y = 20
y = 5
x= -4
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