3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
-9
x . 9 =12-3x9x =12-3x9x+3x=1212x =12x =1
3x + 2 = -10 3x = -12 x = -4
all you do is subtract the 3x from both sides and you get:y = -3x + 12
7x = 3x - 12 4x=-12 x=-3
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
X = 12
4+3x-27=-12 To solve it... 3x= -12-4+27 3x= 11 x= 11/3 x= 3.666
3x=12 3x/3=12/3 x=4
x = 4 and y = 0
-9
15x minus 8=minus 180 3x+8=24
Multiply first equation by 1.5, giving 3x + 3y = 12, but we are told that 3x + 3y = 6. If there isn't an error in the question then 2 = 1!
23
x=7
x = -8