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Chapter 2: Q. 180 (page 144)

Solve the formula for l:

A=12pl+B.

Short Answer

Expert verified

The solution isl=2A-2Bp.

Step by step solution

01

Given information:

Consider the equation,

A=12pl+B

02

Step 2:

Add -Bon both sides,

A-B=12pl+B-B

we get,A-B=12pl

03

Step 3:

To remove the fraction 12, multiply by 2 on both sides,

2×A-B=2×12pl

we get,2A-2B=pl

04

Step 4:

Divide by pon both sides,

2A-2Bp=plp

On simplifying, we get,

2A-2Bp=l

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