It is called a proportion.
It could be called an equivalence relationship.
An Equation is a number sentence stating that two amounts are equal
Two fractions that are the same are called equivalent fractions. Example: 4/5 and 8/10. When two fractions are set equal to each other in an equation, that equation is called a proportion: 4/5 = x/10
I would call an equation of this type a ratio and proportion.
When two expressions are equal they can form an equation.
A mathematical statement that two quantities or expressions are equal is called an equation.
They are equivalent fractions as for example: 3/4 = 9/12
In actual problems, we convert two (or more) fractions so that they have equal denominators.
If it doesn't have an equal sign, then it's not an equation.
They are called equivalent fractions.
A proportion is an equation stating that two ratios are equal. ex: 3/12 = 9/36 is a proportion.