"Quick Check" 4 Problems PLEASE DO ALONE! NO HELP!

Front

10x + 7 - 4x - 9

Back

6x-2

Front

6x - 9x + 5

Back

-3x+5

Front

-15x + x

Back

-14x

Front

-5 + 5x + 3 + 6x

Back

11x-2

Front

3x + 4 - 2x + 1

Back

x+5

Front

8x - 3x + 2 + 5

Back

5x+7

Front

-4x + 6 + 2x - 1

Back

-2x+5

Front

7x - 2 + 3x + 4

Back

10x+2

Front

-6 + 2x - 3x + 9

Back

-x+3

Front

5 + 2x - 3 + 4x

Back

6x+2