Question

have i done this right?
solve this simultaneous equation:
4x+y=1
2x-3y=18

4x-6y=36
4x+y=1 (-)

-7y=35
-y=5
y=-5

thanks =)

Answer 1

what about x?

y is correct

Answer 2

1.5?

Answer 3

yes

Answer 4

4x+y =1 --> y = 1 - 4x
2x-3y=18
=> 2x -3 (1 -4x) = 18
2x - 3 + 12x = 18
14x = 21
->x = 21/14 = 3/2
=> y = 1 - (4 * 3/2) = 1 - 6 = -5
(3/2 , -5)

Answer 5

i perfer my way...