Adding and Subtracting to Combine Like Terms

Simplify the expression: 2x + 1 + 7x 

• 10x

• 10

• 9x + 1

• 9 + 1x

-6k + 7k=

• k

• -k

• 12k

• -12k

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4

• 2a + 2b + 4

• 8ab

• 4ab + 4

Simplify the following expression:
3 + 5x + 8 - 2x

• -3x² - 11

• 3x² + 11

• 11 - 3x

• 11 + 3x

Find the Sum: 
(5 - t) + (3t +2)

• 2t + 7

• 2t + 3

• -2t + 3

• -2t + 7

(6x + 3y + 4) – (8x + 9y)

• -2x - 6y

• -2x - 6y + 4

• 2x + 6y + 4

• 14x + 12y + 4

Find the difference (2x + 5) − (x + 4).

• x + 1

• 3x + 9

• −x + 1

• x + 9

Find the sum:
(7k + 9) + (4k - 3)

• 3k + 6 

• 11k + 6

• -11k + 6

• - 3k + 6

(-11a + 7) – (11a – 7)

• -22a - 14

• 0

• -22a + 14

• -22a

(9v-8w)-(8v-9w)

• v+w

• v-w

• 17v+w

• 17v-17w