-424Four times the unknown number
X = 240
A minus plus a minus is not necessarily positive. A minus multiplied by a minus is. The reason being that the minus of a minus is a positive. It's a double negative.
My number is 11.
The algebraic expression for 11 minus the product of 5 and a number can be written as 11 - 5x, where 'x' represents the unknown number.
A number: x (or any other convenient letter) Difference: use the minus sign, therefore x - 14 Triple this difference: 3(x-14)
In Maths double sign symbols can be tabled as = + = - = - = + NB If no symbol is given in front of a number, then read it as plus(+).
The solution is any pair of numbers that make the statement truewhen you plug them in place of 'x' and 'y'.There are an infinite amount of such pairs of numbers.Any pair of numbers will work, just as long as(double the 'x' number) minus (triple the 'y' number) is 18.
Double it minus the previous number.
k-2.5 An algebraic expression is just using variables (in this case, k) for unknown numbers. Since the question is asking what the number k minus 2.5 is, your answer is k-2.5.
"IT IS ALWAYS A ODD"
A plus number.
Let the unknown number be X: -4x-10 = 2 -4x = 2+10 -4x = 12 x = -3 Remember that a minus multiplied by a minus is equal to a plus: -4*-3 = 12