Answer :

Let the weight of the first piece of pizza be x g.

The first piece is 7g lighter than the second piece.


The weight of the second piece of pizza = (x + 7) g.


The first piece is 4g heavier than the third piece.


The weight of the third piece of pizza = (x – 4) g.


The total weight of the pizza = 300g.


According to the given condition,


x + (x + 7) + (x – 4) = 300


x + x + 7 + x – 4 = 300


3x + 3 = 300


3x = 300 – 3 (Transposing 3 to RHS)


3x = 297


x = (Transposing 3 to RHS)


x = 99


The weight of the first piece = x = 99g.


The weight of the second piece = x + 7 = 99 + 7 = 106g.


The weight of the third piece = x – 4 = 99 – 4 = 95g.


The weights of the three pieces of pizza are 95g, 99g and 106g.


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