Question

solve the following simultaneous equations.
(i) 3x+y=6
y=x-2
ii)3x=5y=-6
x+2y=3

Answer 1

3x+y=6
y=x-2
3x+(x-2)=6
4x=8
x= :P

Answer 2

3x=5y=-6
x+2y=3

multiply both the second equation by 3 :P
3x+5y=-6
3x+6y=9
--------
0x-y=-12
y=12

Answer 3

y=0
x=2

Answer 4

y=15
x=-27

Answer 5

thanks guys both of your answer are correct.
i wish i could give two medal :( ....maybe one medal for ikram and fan for sargams :) thanks guys really appreciate the help.....