# Summary

1. A statement of equality between two algebraic expressions, involving one or more variables is called an equation.

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2. If the highest power of the variable (s) in an equation is 1, it is said to be a linear equation.Â

3. Any operation done on one side of an equation must be done on the other side also, for the equation to remain true.

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Transpose method :Â

4. While solving word problem, do the following steps:

(i) Identify the unknowns

(ii) List out the given data

(iii) Form the equation using given relation

(iv) Find the unknown using solving equation