Write a variable expression for this amount 4 less than a number g
5 less than a number
These are called constants, or numbers that don't change. Variable: an unknown or changing number. Remembering that "more than" means "plus that much", I'll be adding 30 to the w. The keyword here is very obvious; "multiplied by" means that I'll be multiplying the unknown by the given value. Since 1 times anything is just that anything, we usually don't write 1 as a coefficient, but it's always there. Michael Kelley. You will pick a variable to stand for one of these unknown amounts. Since order matters in subtraction, I'll need to be careful with the order of the items. When numbers are multiplied, they are called factors. If there's more than one term separated by plus or minus signs, then we have an expression. In this case, that means that the "nine less than", which is first in the English, actually needs to be last in the math.
But always use your head! The that part is just x, so this variable will be the bottom of my ratio expression. She is also a freelance writer with more than 14 years of experience.
Example: x is the same thing as 1x, and x3y2m is the same thing as 1x3y2m. For example: They may tell you that a trip took ten hours, and that the trip had two legs. Problem 4.
Writing algebraic expressions calculator
Let the keywords and logic help you find the proper corresponding math expressions. The word factor always signifies multiplication. For now, I will help you translate English phrases into mathematical phrases, called expressions. If you're not sure of the proper translation, use numbers. Then this translates to: Translate "nine less than the total of a number and two" into an algebraic expression, and simplify. For instance, think about the word sum. Problem 3. Others have variables letters that represent an unknown or changing number , and some have variables and numbers mashed together, in which case the numbers are called coefficients. These are called constants, or numbers that don't change.
The things, in this case, are a number and 2. The expressions we'll be translating are very straightforward.
Writing basic expressions with variables
And again, we speak of the "product" abcd, even though we do not name an answer. The keyword here is very obvious; "multiplied by" means that I'll be multiplying the unknown by the given value. Variable: an unknown or changing number. Translate "4 less than x" into an algebraic expression. The word factor always signifies multiplication. If you can clearly explain your work to a fellow student, then you're well on your way to mastery. The order of the terms here is the unknown , followed by the value that is being multiplied onto the unknown.
We like terms, and we especially like like terms.
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