what is subtitition
replace for instance, (1-y) with any variable most people like to use X so then the equation becomes, instead of 4(1-y), .... 4(x)
4x + y
Substitution is a concept commonly used in mathematics, algebra, and even linguistics. In mathematics, substitution refers to the act of replacing a variable or expression with its equivalent value.
For example, if you have an algebraic equation like "2x + 3 = 7," you can solve for the value of x by using substitution. First, you need to isolate the variable by subtracting 3 from both sides of the equation, which gives you "2x = 4." Then, to find the value of x, you need to substitute the expression "2x" with its equivalent value of 4. By dividing both sides of the equation by 2, you find that x = 2.
In the context of linguistics, substitution refers to the act of replacing one word or phrase with another word or phrase that carries a similar meaning. This is often used to paraphrase or clarify ideas, especially in language learning or translation.
In summary, substitution is the process of replacing a variable or expression in mathematics or a word or phrase in linguistics with an equivalent value or another term.