A proportion is simply a ratio of one number to another. An equation can be any or all of the mathematical operations taking place on numbers or variables.
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A proportion is an equation in which 2 fractions are set equal. A rate is the ratio of change of two things. Speed is a rate, the ratio of distance to time.
Expression has no answer. a equation has an answer
i really dont know
an equation has an equals sign.
a proportion is an equation. a / b = c / d cross multiply: ad = bc then solve