Simplifying Expression

Which expression is equivalent to 7z - 4 + 5z + 2 ?

• 12z + 6

• 12z - 6

• 2z + 6

• 18z

Which expression is equivalent to 45e + 12 + 6e - 8 ?

• 51e + 20

• 39e + 4

• 51e + 4

• 5e - 20

Which of the following is equivalent to

x + x + x + y + y + y ?

• 3x + y

• 3x + 3y

• 6 + x + y

• 6xy

Which of the following is equivalent to

5(6x +3) ?

• 6x + 8

• 30x + 3

• 11x + 8

• 30x + 15

Which expression is equivalent to 12a + 9b ?

• 3(4a + 3b)

• 4(3a + 3b)

• 4(4a + 3b)

• 6(2a + 3b)

Check ALL the expressions that are equivalent to 4(3x + 2y) + 3(7x - 4y) ?

• 12x + 8y + 21x + 12y

• 12x + 8y + 21x - 12y

• 33x + 4y

• 33x - 4y

Simplify:

10 + 4(2n + 3) -11n

• -3n + 22

• 7n + 13

• 19n + 17

• -3n + 13

Simplify:

5(6n - 2) - 13

• 11n - 20

• 30n - 3

• 30n - 23

• 11n - 6

Simplify:

3(2x + 4) + 5x

• 11x + 12

• 11x + 4

• 5x + 18

• 6x + 9

Simplify:

-(5y - 8)

• -5y -8

• 5y - 3

• -5y + 8

• 5y - 8