Sympose It

click the equals sign to solve

Result

How it works

+ joins terms of a sum; × joins factors of a product.
A red \ on a branch means that piece is subtracted; a blue / means it is divided by.
Click the = sign to see every place it can move to. Hover a spot to preview how the inverse slashes would change (the Result box updates too), then click the spot to move the equals sign there and solve for that part of the equation.
Click a slash to see everywhere it can be pushed to, with the same hover preview — e.g. −(x+y) → −x − y, or hopping across the = sign. If a spot holds both kinds, clicking cycles: subtraction, division, none. Moves that would break the math (like pushing ÷ through +) are simply not offered.
Recenter re-draws the tree around the equals sign's current position.
Flip mirrors the whole tree so the left and right sides of the equation trade places — the Result box updates, the equation you typed stays put.
Use copies the Result equation into the input bar at the top, making it the new starting equation to work from.