In order to answer the question, you need to isolate your terms, that is getting "x" alone on one side of the equation and the integer values alone on the other.
5x - 6 = 4x + 8
Start by adding 6 to both sides of the equation.
5x - 6 + 6 = 4x + 8 + 6
5x = 4x + 14
Then, subtract 4x from both sides.
5x - 4x = 4x - 4x + 14
x = 14
There's your answer!
16
If: 20x+5y = 15 Then: y = -4x+3
4x + 3y = 8x + y so 3y - y = 8x - 4x ie 2y = 4x so y = 2x
4x - 3 - 5x + 7 = 6 4x - 5x = 3 - 7 + 6 -1x = 2 x = -2
x = -½
2y = 4x + 4y = 2x + 2
many solutions
x= -.5
You can't solve it. But you can simplify it to get: 4x+y=2
4x+9 = 7x+3 4x-7x = 3-9 -3x = -6 x = 2
-4x+3 = 23+6x -4x-6x = 23-3 -10x = 20 x = -2
Add 4x - 2 to each side: 5x = 5 x = 1
You cannot solve one linear equation with two variables.
8+4x
5+4x-7 = 4x+3-x 4x-2 = 3x+3 4x-3x = 3+2 x = 5
16
4x+7-3x = 15 4x-3x = 15-7 x = 8