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Solving an Equation with Variables on One Side

The length of...

Question

The length of a rectangular hall is 4 meters less than 3 times the breadth of the hall. What is the length, if the breadth is $b$ meters?

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Solution

Given, breadth = $b$ meters

$∴$ 3 times the breadth = $3 \times b r e a d t h$ = $3 \times b$ = $3 b$

Since the length is 4 meters less than 3 times the breadth, length = $(3 b - 4)$ meters.

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