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So I want to align my 'equals' sign and inequality signs. So I have done,

   \Rightarrow d(\mathbf x',\mathbf 0) & \geq d(\mathbf x,\mathbf 0) - d(\mathbf x',\mathbf x) \\
   &=  \varepsilon + \delta - d(\mathbf x',\mathbf x)

This works fine, it aligns the signs however it also centres the whole equation. I don't want it to be centred, I just want it to start from the left and move to the right as normal text should.

Any ideas?

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related: How to left align a set of equations.. – barbara beeton Mar 31 '14 at 13:34

Using \usepackage[fleqn]{amsmath} will left align all equations. You can use flalign environment instead.


\usepackage{showframe}   %% just for demo


  \Rightarrow d(\mathbf x',\mathbf 0)
  &\geq d(\mathbf x,\mathbf 0) - d(\mathbf x',\mathbf x)   && \\     %% note two && at the end
  &= \varepsilon + \delta - d(\mathbf x',\mathbf x)


enter image description here

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Here is a possible solution:




  &\geq d(\Vector{x},\Vector{0}) - d(\Vector{x}',\Vector{x}) \\
  &=    \varepsilon + \delta - d(\Vector{x}',\Vector{x})



The best answer is definitely Harish Kumar's.

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Use the optional argument:

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