|Class 6 Maths Algebra||Expressions with Variables|
Expressions with Variables
Variables do not have a fix value. But since they are numbers, different operations of addition, subtraction, multiplication and division can be done on them. Expressions can also be formed containing variables. For e.g.:
3x +5. But only when the variable, in this case x, is given some value the expression can be evaluation. If x = 4, then the value of expression is 3(4) + 5= 17.
Expression can be formed in various ways. Some examples are as follows:
Problem: Give expressions for the following cases.
Problem: Give expressions in the following cases.
= 2m -11
= 5y +3