Three watermelons weigh 23 Jin, the first and second 14 Jin, the second and third 15 Jin, how many jin per watermelon Demand formula

Three watermelons weigh 23 Jin, the first and second 14 Jin, the second and third 15 Jin, how many jin per watermelon Demand formula

The third important point is that:
23-14 = 9 (Jin)
The second important point is:
15-9 = 6 kg
The first important point is:
14-6 = 8 kg

The weight of a watermelon is equal to 2 kg plus the weight of half a watermelon. This watermelon weighs a lot______ Kilogram

2 × 2 = 4 (kg); a: this watermelon weighs 4 kg

The weight of a watermelon is equal to half the weight of the watermelon plus one kilogram. How much is the weight of the watermelon?

There should be a thinking process: Double calculation. Explain that if there are two watermelons, their weight is equal to the weight of a watermelon plus two kilograms, so the weight of a watermelon is equal to two kilograms

The weight of a watermelon is equal to half the weight of the watermelon plus 1 kilogram. What's the weight of the watermelon?

Half a watermelon plus 1 kg = 1 watermelon
Half a watermelon plus half a watermelon = 1 watermelon
So half a watermelon is one kilogram
So 1 watermelon = 2 kg