The equation for general relativity was born in 1915 when Albert Einstein published his theory of general relativity.
The simple answer is that Special Relativity can be described with simple algebraic processes. General Relativity involves much more complex mathematics, including tensor calculus, for its mathematical description.
E=mc^2 Edit : That equation is part of "special relativity" not "general relativity".
if it has an equal sign then it is an equation
The process of removing roots from a mathematical equation is called "solving" the equation.
Yes mathematical equations can be solved.
An equation
The asterisk in a mathematical equation, usually in the context of a computer expression, means to multiply.
Profit = total revenue - total costs is the fundamental mathematical equation for business.
Man can not be summed up in a mathematical equation. I'd be suspicious of any system that made that claim.
It is the answer to a mathematical problem.
EQUATION