If n is the number 5n is 5 times the number.
a times b
x+5: - means a number increased by 5 n - 3: - means a number decreased by 3 5x: - means 5 times a number 5n + 3: - means 3 more than 5 times a number 100 - means one hundred divided by a number n
There is only one extra rule to algebraic expressions over normal numerical expressions: when two letters are next to each other it means multiply them together: ab means a times b The multiplication symbol is omitted as it looks too much like the letter 'x' can could be confused as such.
for example, if you have 2x you can write it as : 2 times x or 2 multiplied by x.
None of the "following" expressions!
It means 4 times "m" - in other words, 4 multiplied with whatever value the variable "m" happens to have.
It can be: 7-4x as an algebraic expression
n + 2n = 3n
The letters in most algebraic equations mostly represent the value of the number or often at times the gradient.
Algebraic expressions are useful for translating problems into the language of mathematics. An algebraic expression for the problem "6 times the sum of 4 and y" would be: 6(4+y) = 24 + 6y.
what is 4 times the sum of a number squared and 3
8x = 72
3 x 8
The difference of thirteen times a number and four.