equivalent expressions

Which expression is equivalent to 3x + 5 + 7x +2?

• 10x+7

• 17x

• 17

• 15x+2

Which expression is equivalent to 4(x+6)

• 4x+6

• 4x+24

• x +24

• 10x+24

Which expressions is equivalent to 6(2x-3)?

• 12x-3

• 8x-9

• 8x-18

• 12x-18

Which expression is equivalent to 7(3a+4b)

• 21a +28b

• 10a+11b

• 21a+4b

• 10a+28b

Which expression is equivalent to 12(5-4x)

• 12x

• 17-16x

• 60-48x