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After solving an equation and getting , which action confirms that the solution is correct?

Class 8Linear Equations in One VariableLinear Equations
  • ASubstitute back into the original equation and check LHS = RHS
  • BMultiply by 2
  • CDivide the equation by 6
  • DAdd 6 to both sides

Step-by-Step Solution

Verification means putting the value back into the original equation; if the left side equals the right side, the solution is correct.
Answer: A) Substitute back into the original equation and check LHS = RHS

Key idea: The five-step recipe

For any linear equation in one variable, follow this order:

1. **Open brackets** if any (use distributive property).
2. **Clear fractions** by multiplying both sides by the LCM of all denominators.
3. **Move all variable terms to one side**, all constants to the other (transposition — flip signs).
4. **Combine like terms** on each side.
5. **Divide** both sides by the coefficient of the variable.

Then **verify** by substituting back into the original equation. Always.

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