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An equation is a balance. To find x, undo what has been done to it, one step at a time, doing the same thing to both sides. In a multiple-choice paper you can also check each option by putting it back into the equation.
✓ You passed this topic’s test.
Balance — “whatever you do to one side, do to the other”
Use it for: Equations, “think of a number” puzzles and age problems in Class 7–10.
Check: 5 × 5 + 3 = 28 and 2 × 5 + 18 = 28 ✓
Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🔑 Equation Cracker badge when you pass — and a certificate when you finish all 6 topics of Part 3 · Class 8–10. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India and visit homes in selected cities. Tell us what you need and our team will call you with timings and fees.