Simplifying & Expanding Algebraic Expressions with Brackets

What are your constants in the following algebraic expression?

2x + 4 + x - 5x

• x

• 4

• 2x

• -5

Expand

5(a + 6)

• 5a + 6

• a + 30

• 5a + 30

• 5a - 30

Expand

2(7c - 8)

• 14c - 16

• 14c + 16

• 7c - 16

• c - 16

• 9a+b+2c

• 10a+7b+c

• 13abc

• 18abc

• 8x²+20x

• 9x²+20x

• 10x²+20x

• 8x²+8x

• 13x+32y

• 27x+12y

• 31x+32y

• 13x-32y

• 16x+11

• 16x

• 24x+41

• 4-24x

• 15a+6b

• 21ab

• 5a

• 15a-6b

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Expand and simplify  $3\left(2a+5\right)-5\left(a-2\right)$  

•  $a\ +\ 25$  

•  $6a+15$  

•  $11a-5$  

•  $6a+15+5a-10$