Find this important question of ncert class 9th of chapter linear equations in two variables .Sir please help me to find out the easiest and simplest solution of question 8(4) of exercise 4.3, give me the best solution of this question.In countries like USA and Canada, temperature is measured in Fahrenheit, whereas in countries like India, it is measured in Celsius. Here is a linear equation that converts Fahrenheit to Celsius:(iv) If the temperature is 0°C, what is the temperature in Fahrenheit and if the temperature is 0°F, what is the temperature in Celsius?
(iv) When C = 0,
F = (9/5)C +32
F = (9×0)/5 +32
=0+32
=32oF
When F = 0,
0 = (9/5)C+32
(9/5)C = 0-32
(9/5)C = -32
C = (-32×5)/9
=-17.7777
=-17.8oC