Question

1. \\(3(2x+5)\\)
2. \\(2x+5+4x=\\)
3. \\(6x+15\\)
4. \\((10x+)-(4x+20)\\)

Explanation:

Simplify expression 1

$$ 3(2x + 5) = 6x + 15 $$

Simplify expression 2

$$ 2x + 5 + 4x = 6x + 5 $$

Simplify expression 3

$$ 6x + 15 $$

Simplify expression 4

$$ (10x + \text{blank}) - (4x + 20) = 6x + \text{blank} - 20 $$

Assuming the goal is to match the simplified form \(6x + 15\) from the other parts:

$$ (10x + 35) - (4x + 20) = 6x + 15 $$

Thus, the missing term in the blank is \(35\).

Answer:

1. \(6x + 15\)
2. \(6x + 5\)
3. \(6x + 15\)
4. \((10x + 35) - (4x + 20) = 6x + 15\) (with the blank filled as \(35\))