Alex bought twice as many pears as apples. He bought 4 more pears than oranges. He bought 6 apples. How many oranges did Alex buy?

Let x be the number of oranges, y be the number of pears and z be the number of apples.

y = 2 z
y = x + 4
z = 6 (apples)

All you have to do is substitute.
y = 12 (pears)
x = y-4 = 8 (oranges)

45

To determine the number of oranges Alex bought, we need to break down the given information and solve step by step. Let's start with what we know:

1. Alex bought twice as many pears as apples.
- Since he bought 6 apples, the number of pears will be 2 times that: 6 * 2 = 12 pears.

2. Alex bought 4 more pears than oranges.
- We already know the number of pears (12). Let's assume the number of oranges Alex bought is "o." According to the given information, 12 = o + 4. Subtracting 4 from both sides of the equation gives us o = 12 - 4, which simplifies to o = 8.

Therefore, Alex bought 8 oranges.