Class VII Mathematics
Chapter 4: Simple Equations
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Syllabus Sections
Key Formulas & Equations
Click Copy to duplicateVariable Transposition
x + a = b \Rightarrow x = b - a
Moves constant to opposite side with inverse operator sign.
Related Formulas from Adjacent Chapters
Median (Odd N)
\text{Median} = x_{(N+1)/2}
[From Data Handling] Middle term of sorted dataset.
Range
\text{Range} = x_{max} - x_{min}
[From Data Handling] Difference between largest and smallest values.
Supplementary Angles
\theta_1 + \theta_2 = 180^\circ
[From Lines and Angles] Sum of supplementary angles is a straight angle.
Complementary Angles
\theta_1 + \theta_2 = 90^\circ
[From Lines and Angles] Sum of complementary angles is a right angle.