If you mean: 5+2(x-1) = 12 then the value of x works out as 4.5
If: x+1+2x = 1x+5 Then: x = 2
5X-3 - X-1 + X + 6 The answerdepends on value of X
8+-1= 7 x=-1
xy + x + y + 1 is an expression, not an equation. An expression cannot be solved.
x + 1= -y implies x - y = 1
1 + 3x - x = x - 4 + 2x 1 + 4 = x + 2x - 3x + x 5 = x
The answer would be no solution. x+1=x+2. Subtract 1 from both sides x=x+1. Subtract x from both sides. 1 does not = 0
i have no clue what the answer is
If you mean solve for X: 3x + 52x + 1 = 0 55x = -1 x = -0.02
5 + (-4) = 1 x = -4
You don't "solve" an expression. You can solve an equation; an expression can be simplified or otherwise manipulated, and if you know the value of "x" (in this case), you can evaluate its value.
x=8