Solving a quadratic equation is difficult.

I am learning how to solve ordinary differential equations.

He worked all night to find the solution to the partial differential equation.

Solving a linear equation is difficult.

This ditto mark indicates the same meaning as the previous character.

He is good at one-point reading in shogi.

His message ended with a three-dot ellipsis, suggesting something.

Our company has started making profits beyond the break-even point.

This character is written with a kunojiten.

He can do a perfect handstand.