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Combine like terms: 9x + 8x

• 72x

• 1x

• 17x

• -1x

Combine like terms: x + 1 + 3x

• 3x + 1

• 4x + 1

• 3x + 4

• 5x + 3

Combine like terms: 4x - 3 + 2 - 2x

• 6x + 5

• 2x + 1

• 2x - 1

• 6x - 1

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

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

5x + 3y + 5 + 4x + 3y + y + 8

• 9x + 7y + 13
• 6x + 2y + 2
• 25x + 2y + 3
• x + 7y + 12

Expand and simplify (use the distributive property!): 6 (x + y + 7)

• 6x + 6y + 42

• 12xy + 42

• 6x + 6y + 7

• 6x6y + 42

Expand and simplify 4(7x + 3).

• 28x + 12

• 28x + 3

• 47x + 12

• 47x + 3

Distribute AND combine like terms to simplify: 8(8 + 4x) + 6

• 64 + 38x

• 70 + 32x

• 32x + 38

• 70 + 38x

Distribute AND combine like terms to simplify:

-9 + 4(4x + 9)

• 32x + 16

• 27 + 16x

• 16x

• 16x + 18

Distribute AND combine like terms to simplify:

-2m - 5(2 + 7m)

• -37m - 10

• 33m -10

• 33m + 10

• -37m - 5