Aligned multline

Here is what I would do (require mathtools package) begin{align} MoveEqLeft[3] (a+b+c+d+e+f) \ ={}& a+b+c+d+e+f+g+h+i+j+k+l+m+n\ begin{split} ={}& a+b+c+d+e+f+g+h+i+j+k+l+m+n \ & …

Read more