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cmg27
27.08.2020 •
Mathematics
Is x = 3 a solution of the equation 3x − 5 = 4x − 9? Explain.
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Ответ:
no because on is equal to 3 when plugged in and the other is equal to 4 when plugged in.
Step-by-step explanation:
Ответ:
Distributive law, in mathematics, the law relating the operations of multiplication and addition, stated symbolically, a(b + c) = ab + ac; that is, the monomial factor a is distributed, or separately applied, to each term of the binomial factor b + c, resulting in the product ab + ac. (https://www.britannica.com/topic/distributive-law)
Associative law, in mathematics, either of two laws relating to number operations of addition and multiplication, stated symbolically: a + (b + c) = (a + b) + c, and a(bc) = (ab)c; that is, the terms or factors may be associated in any way desired. (https://www.britannica.com/topic/associative-law)
Here's a video that explains the basics: https://www.youtube.com/watch?v=x9hoPIMNPw4