A mathematical sentence that contains an equals sign would be called an equation.
A mathematical sentence that contains an equal sign is called an equation
An equation
It is an equation.
a equation
A mathematical sentence that uses an equal sign to explain the equality of two amounts is called an equation.
An equation!
expression
9254+15892=25146
A mathematical sentence is a math problem without an equal sign, broken down on step at a time.
It is an inequality.
The word you're looking for is.... equation.