Combining like terms

Simplify: x + 3x + 6x + x

• 9x

• 11x

• 2x + 9x

• Can't be simplified

Simplify: 7t - 3t + t - 3t

• 2t

• 8t - 6t

• 14t

• Can't be simplified

Simplify: 4q + 4t + 3q + t

• 12tq

• 3q + 4t

• 7q + 5t

• Can't be simplified

Simplify: 4k + 6k - 3k + 3s - s

• 13k + 3s

• 7k + 2s

• 7k + 4s

• Can't be simplified

Simplify: 10d - 3d + 2e + 4d

• 11d + 2e

• 17d + 2e

• 19de

• Can't be simplified

Simplify: 8q + 3q - 6t + 2q - 4q

• 3qt

• 11q - 6t - 2q

• 9q -6t

• Can't be simplified

Simplify:  $7y^2\ -5y\ +\ 9y\ -\ 5y^2$  

•  $6y^{2\ }$  

•  $2y^{2\ }+\ 4y\$  

•  $12y^{2\ }+\ 14y$  

• Can't be simplified

Simplify: 10w + 3d + 3w + d

• 13w + 4d

• 17wd

• 13w + 3d

• Can't be simplified

Simplify: 12b + 4b² - 10b

• 4b² + 2b

• 4b² + 22b

• 6b²

• Can't be simplified

Simplify: 5e + 7e - 10e + 9 e

• 31e

• 21e - 10e

• 11e

• Can't be simplified