Practice30Create account

Assertion (A): The equation is NOT a simple equation studied in this chapter. Reason (R): It contains two different variables, so it is not a linear equation in one variable. Which is correct?

Class 7Simple EquationsSimple Equations
  • ABoth A and R are true, and R correctly explains A
  • BBoth A and R are true, but R does not explain A
  • CA is true but R is false
  • DA is false but R is true

Step-by-Step Solution

has two variables and , so it is not a linear equation in one variable (the type studied here). R correctly explains A.
Answer: A) Both A and R are true, and R correctly explains A

Key idea: Two-sided equations: variable on both sides

When the variable appears on both sides, gather all variable terms on one side and all constants on the other.

Example: .
Move to the left (flip):
Simplify:
Move +3:
Divide: .

**Verify**: ; ✓.

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Simple Equations practice questions

More Class 7 Simple Equations practice

Neha writes 6y − 11 in her notebook and calls it an equation. Her teacher says it is not…Ravi tests whether y = 6 is a solution of 4y − 5 = 23. He works out the LHS and gets 19.…Exactly one value in the set 1, 6, 9, 18 is a solution of 5m − 8 = 3m + 10. Which one is…Which is the correct first move when solving 7x − 5 = 30 by the balance method?The second line of a student's working reads 6x = 40 + 14. Which equation was the first…