5x+8x+3x-2x = 14x
You can't solve 5x+3x there isn't a equal sign. But you can simplify it to be 8x
x2 plus 3x plus 3 is equals to 0 can be solved by getting the roots.
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
It is: 8-2x
3x+5=20 3x=15 x=5
-3x + 5 = 20 -3x = 15 x = -5
You cannot. 3x + 4 is an expression, not an equation or inequality. There cannot be a solution.