Prakash Tiwari and Ishita Joshi Solutions for Chapter: Algebra, Exercise 6: Let's Practice

Frame eight expressions with numbers $2$ and variable x, proved the expression should not use more than one operation from multiplication, division, addition and subtraction. The expressions must be expressed in terms of x.

Given below are a few expressions. Carefully identify the following operations and mention how these expression have been formed.

$\mathrm{x}+6, \mathrm{x}-6, \mathrm{y}+18, \mathrm{y}-19$

Given below are a few expressions. Carefully identify the following operations and mention how these expression have been formed.

$15\mathrm{y}, \frac{\mathrm{y}}{15}, \frac{15}{\mathrm{z}}$

Given below are a few expressions. Carefully identify the following operations and mention how these expression have been formed.

$3\mathrm{y}+18, 4\mathrm{z}-16, 9\mathrm{y}+33$

Given below are a few expressions. Carefully identify the following operations and mention how these expression have been formed.

$8\mathrm{m}, -8\mathrm{m}+2, -8\mathrm{m}-4$

Arjun is x years old, then determine Arjun's grandfather's age who is $3$ times his age.

Arjun is x years old, then determine Arjun's grandmother's age who is $4 \mathrm{years}$ younger than his grandfather. Arjun's grandfather's age is who is three times Arjun's age.

Hundred times hundreds digits is added to ten times tens digit which is further added to ones digit gives a $3$-digit number. If x, y and z are the ones, tens and hundred digits, respectively, then express the number using an algebraic expression.