I wanted to left align a set of equations. I've tried the solution provided in

aligning to the left.

It worked. But, I wanted to have a single equation number for the entire `flalign`

in order to refer to it later. Like in case of `equation+split`

. While using `equation+align`

, I am able to get it. But, if I use `equation+flalign`

the equations are still being centered. Is there a way to do it?

Example using `equation+align`

,

```
\begin{equation}
\begin{align}
\mbox{Minimize } & x_1+x_2+x_3 \\
\mbox{Subject to} & \\
& x_1+x_2 \leq 10 \\
& x_2+x_3 \leq 8 \\
& x_1+x_3 \leq 5
\end{align}
\end{equation}
```

I would like to do this while the equations are left aligned.

It will be even better if the equations can be spaced a little (for example, 1 cm) from the left margin instead

of starting from the left margin.

Thanks in advance

## Best Answer

One option will be to use

On the other hand, this option (

`[fleqn]`

) can be passed to`\documentclass`

also asThe MWE will be

The output will be

But all the equations in the document will be left aligned by this approach.

The

`equation`

environment will put the equation in display mode by definition. To space only one equation left aligned, as you wish, one way is to use`\phantom`

as below: