If x-3x=18 then x equals -9
3x - 4y = 10-3x - 4y = 8 -> add line 1 to line 2 3x - 4y = 100x - 8y = 18 -> -8y = 18 -> y = -18/8 = -9/4 -> 3x - 4*(-9/4) = 10 -> 3x + 9 = 10 -> 3x = 1 -> x = 1/3
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3
1/3x + 6 = 9 Restating the problem x + 18 = 27 I multiplied by 3 x = 9 I subtracted 18 from 27
3x-6y=9 -3x -3x -6y=9-3x __ ____ -6 -6 y=9-3x ____ -6
If x-3x=18 then x equals -9
4x+6-7x+9=18-3x+15=18-3x=3x=-1
3x - 4y = 10-3x - 4y = 8 -> add line 1 to line 2 3x - 4y = 100x - 8y = 18 -> -8y = 18 -> y = -18/8 = -9/4 -> 3x - 4*(-9/4) = 10 -> 3x + 9 = 10 -> 3x = 1 -> x = 1/3
27-9 =18. 18/3 =6
3x+12 = 18 3x = 18-12 3x = 6 x = 2
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3
1/3x + 6 = 9 Restating the problem x + 18 = 27 I multiplied by 3 x = 9 I subtracted 18 from 27
If: 3x+6 = 18 Then: x = 4
3x-y=9 y=3x-9
3x-6y=9 -3x -3x -6y=9-3x __ ____ -6 -6 y=9-3x ____ -6
the answer is -3x = 0
3x=18 x=18/3 x=6