1. Solving equations requires a good understanding of algebra.
解方程需要对代数有很好的理解。

2. The teacher gave us a set of equations to solve for homework.
老师给我们一组方程让我们做作业。

3. Linear equations can be graphed on a coordinate plane.
线性方程可以在坐标平面上画出来。

4. Balancing chemical equations is an important skill in chemistry.
平衡化学方程是化学中的一个重要技能。

5. Quadratic equations often have two solutions.
二次方程通常有两个解。

6. It is important to check your work when solving equations to avoid errors.
解方程时检查你的工作是很重要的，以避免错误。