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The additive inverse is used to solve equations; equations, in turn, are used to model many real-world situations.
Subtracting an integer is the same as adding the additive inverse. In symbols: a - b = a + (-b), where "-b" is the additive inverse (the opposite) of b.
Additive inverse: change all signs. Multiplicative inverse: flip it over.
(a) Why should we use petrol, diesel and CNG with utmost care?
Well, isn't that a lovely question! Converting kilograms of Compressed Natural Gas (CNG) to the equivalent volume in liters of petrol involves a simple calculation. You can use the energy equivalent factor, which is typically around 1.35 kg of CNG to 1 liter of petrol. By dividing the weight of CNG in kilograms by 1.35, you can find the approximate volume in liters of petrol. Happy converting, my friend!