6x with 3 over the x, because that is how many x's there are.
X=7
x plus 2 = x + 2 x plus x = 2x
5x + x - 6x + 2x = 2x
-7 +2x = x + 8 2x - x = 7 + 8 x = 15
x + 361 = 555 + 423 x = 555 + 423 - 361 x = 617
4
It is x + 423. There is no equation nor an inequality that can be solved for the value of x. It is simply an expression.
2x + x + 4 +2x = x + 20 5x + 4 = x + 20 5x - x = 20 - 4 4x = 16 x = 4
x + 2x + 6x = 9x
6x with 3 over the x, because that is how many x's there are.
X=7
x plus 2 = x + 2 x plus x = 2x
x=1
5x + x - 6x + 2x = 2x
3x + 2x - 8x + 2x = -x
-7 +2x = x + 8 2x - x = 7 + 8 x = 15