If x-3x=18 then x equals -9
3x=18 x=18/3 x=6
18=3(3x-6)
-3x + (-18) = 2x + 7 +18 +18 -3x = 2x +25 -2x -2x -5x = 25 ----- ----- -5 -5 x=-5 *------- equals a division line
-3x+7=2x-18 ---> 7+18=2x-3x ----> 25=5x ----> x=5
3x+12 = 18 3x = 18-12 3x = 6 x = 2
If x-3x=18 then x equals -9
If: 3x+6 = 18 Then: x = 4
3x=18 x=18/3 x=6
3x = 18divide both sides by 3x = 6
18=3(3x-6)
The answer is x = 6
-3x + (-18) = 2x + 7 +18 +18 -3x = 2x +25 -2x -2x -5x = 25 ----- ----- -5 -5 x=-5 *------- equals a division line
-3x+7=2x-18 ---> 7+18=2x-3x ----> 25=5x ----> x=5
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
4x+6-7x+9=18-3x+15=18-3x=3x=-1
3x-18 = 9 Adding 18 on both the sides we get, 3x = 27 Dividing both sides by 3 we get, x = 9.