X plus 2x plus 3

Answer 1

This equals 3x+3 also written as 3(x+1). If you mean a linear equation like 3x + 3 = 0, then the solution is x = -1

Answer 2

Here,x+2x+3=?

Now,

X+2x=-3

Or,3x=-3 (1x+2x)

Or,x=-3÷3

Or,x=-1

Therefore,X=-1