Chapter 11: Algebra

Questions

1. Solve $3x + 2 = 11$.
2. Write the algebraic expression: '$5$ less than thrice $y$'.
3. Value of $\dfrac{n(n+1)}{2}$ when $n = 5$.
4. Value of $2x + 3$ when $x = 5$.
5. Write 'twice a number decreased by 4' as expression.
6. Solve $x + 7 = 15$.
7. Solve $3x = 21$.
8. Solve $x/4 = 5$.
9. Value of $5y - 2$ when $y = 3$.
10. Simplify $3x + 5x - 2x$.

Extra Practice (Optional)

• Solve $x + 7 = 15$.
• Value of $2m^2 + 3$ for $m = 2$.
• Expression for cost of $n$ chairs at $\rupee 250$ each.