Question

what are equations ????

Answer 1

a mathematical sentence built from expression using one or more equall sign examples are
3x+4y=1

Answer 2

Hope this helps !
An equatiom is a statement that the values of two mathematical expressions are equal.
In mathematics, an equation is a statement of an equality containing one or more variables. Solving the equation consists of determining which values of the variables make the equality true. An equation is written as two expressions, connected by a equals sign ("=").