3x + 5 = 6x + 23 -3x = 18 x = -6
3x + 2 = 3x + 6 This is not possible.
18 + 70 ie 87
X2 + 3X - 18 = 0What two factors of - 18 add up to 3 ??(X - 3)(X + 6)============so, by the zero sum rule,X = 3X = - 6
3x + 7y = 3*x + 7*y = 3*6 + 7*4 = 18 + 28 = 46
4x+6-7x+9=18-3x+15=18-3x=3x=-1
6-3x+12=0 6+12-3x=0 18-3x=0 18=3x x=6
3x + 5 = 6x + 23 -3x = 18 x = -6
-3x+14 = -4 -3x = -4-14 -3x = -18 x = 6
27-9 =18. 18/3 =6
3x + 2 = 3x + 6 This is not possible.
x^2+3x-18=0 (x+6)(x-3)=0
25-7=18 18/3=6
If: 3x+6 = 18 Then: x = 4
3x+12 = 18 3x = 18-12 3x = 6 x = 2
18 + 70 ie 87
3x+y=6