足たして二にで割わる

expression, godan verb (-ru), transitive verb

combine and average; compromise; split the difference

Literally 'add and divide by two'; used when blending two different things, finding a middle ground, or reaching a compromise. Often implies a fair or balanced outcome.

• 二人ふたりの意い見けんを足たして二にで割わったような案あんになった。

  The plan ended up being something like a compromise between the two opinions.