They are: x and y and the expression can be simplified to 6xy
'y' is a variable. '15' is not. [ y+15 ] is an expression in one variable.
Terme und variablen (2)
The expression (-6ay) represents the product of -6, the variable (a), and the variable (y). It indicates that the value is negative and depends on the values of (a) and (y). If (a) and (y) are both positive, the overall expression will be negative. Conversely, if either (a) or (y) is negative, the expression will be positive.
In the expression 5 + y + 8, y is a variable. We know how much 5 and 8 are, those are definite quantities. Only y has an unknown, and hence variable value.
They are: x and y and the expression can be simplified to 6xy
In the expression y+15, there is one variable, the "y."
'y' is a variable. '15' is not. [ y+15 ] is an expression in one variable.
Terme und variablen (2)
y
4y + 9The variable is Y. The variable is the letter (the unknown amount)
The expression (-6ay) represents the product of -6, the variable (a), and the variable (y). It indicates that the value is negative and depends on the values of (a) and (y). If (a) and (y) are both positive, the overall expression will be negative. Conversely, if either (a) or (y) is negative, the expression will be positive.
In the expression 5 + y + 8, y is a variable. We know how much 5 and 8 are, those are definite quantities. Only y has an unknown, and hence variable value.
In mathematics, a variable combined by multiplication or division with a number is referred to as a term. For example, in the expression (3x), the number 3 is multiplied by the variable (x). Similarly, in the expression (\frac{y}{4}), the variable (y) is divided by the number 4. These operations indicate a relationship between the variable and the constant through multiplication or division.
17 - y
You may be referring to an independent variable, which is a quantity in a mathematical expression whose value does not depend upon variations in other quantities in that mathematical expression. For example, in the expression y=2x the variable y depends on the value of x and so is not independent, while in the expression z=x+y the variable z is dependent, but the variables x and y are both independent.
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