Question

6) Convert word problem in to algebraic expression. My age= x years. My sister is 4 years less than my age . My sister's age is ----- years​

Answer 1

Given: My age = x years

           My sister's age = 4 years less than my age

To find: My sister's age in the algebraic expression

Solution:

∵ my sister's age is 4 years less than my age,

∴ my sister's age = (x - 4) years

Answer: My sister's age is (x - 4) years.

Analysis

• This sum belongs to the chapter on Linear Equations. In this chapter, we need to make an algebraic expression with one variable to find its value.

• In the given question, we only need to find the age of the sister in the algebraic expression.

• Since the age of the sister is 4 years less, subtracting 4 from x will give the age of the sister.