3x+2.
x equals any given number.
10n
3x5 ÷ 7y4
y = 4x + 6
It is either 3*2 + a or 3*(2 + a)
125
The expression can be thus: 3x-3 whereas x is the unknown variable
If the variable x represents the number: 5x + 3ParenthesesExponentsMultiplyDivideAddSubtractAlways remember this
10n
3x5 ÷ 7y4
15 h
-10-18x
y = 4x + 6
It is either 3*2 + a or 3*(2 + a)
125
Assuming you call your number "n", the expression would be "14n". You can replace "n" with whatever variable you want to use.
7/ 3/
Multiplicand times multiplier equals product. If the expression has a variable, the numerical factor of the variable is the coefficient.