新时代·中华儿女共筑中国梦
百度 服务人员在其背上放置两把内部注入白开水小铜壶，的电流脉冲驱动下，经过半小时推、按、压等手法，一个疗程下来赵朝浑身舒畅，疼痛明显减轻了。
In mathematics, a set of simultaneous equations, also known as a system of equations or an equation system, is a finite set of equations for which common solutions are sought. An equation system is usually classified in the same manner as single equations, namely as a:
- System of linear equations,
- System of nonlinear equations,
- System of bilinear equations,
- System of polynomial equations,
- System of differential equations, or a
- System of difference equations
See also
[edit]- Simultaneous equations model, a statistical model in the form of simultaneous linear equations
- Elementary algebra, for elementary methods
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