-9
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
7x = 3x - 12 4x=-12 x=-3
y-3x+6y=12 7y=3x+12 y=3x/7 +12/7
12/3 = 4
x . 9 =12-3x9x =12-3x9x+3x=1212x =12x =1
4+3x-27=-12 To solve it... 3x= -12-4+27 3x= 11 x= 11/3 x= 3.666
solve -3x-3y=-15
X = 12
y = 3x = 12y = 12
3x+12 = 18 3x = 18-12 3x = 6 x = 2
15x minus 8=minus 180 3x+8=24