+ Negative values
- Nagatvie Values
+ terms
- terms
+ and - terms
100

10 + -15

-5

100

10 - -5

15

100

2a + 2a

4a

100

3x - x

2x

100

a + a + a + b + b -a -b

2a + b

200

20 + -10

10
200
-25 - - 20

-5

200

10y + 5y

15y

200

20p - 17p

3p

200

3n -n + 20 -n

n +20

300

-13 + -25 + -5

-43

300

(-50) - (-10) - (-10) 

-30

300

10x +15x +3

25x + 3

300

10y - 5y -7y

-2y

300

2b + 2b +3 -b

3b +3

400

43 + - 25 + -30

-7

400

(-5) - (-15) - (50) 

60

400

4 + -5 +3b

3b -1

400
20s + 30y - 20s -35y

-5y

400

25p -p -p + 3d

3d + 23p

500

100 + -50 + -50 + -150

-150

500

995 - -150

1145

500

2x + -3x +6

-1x +6

500

4b - 3x -5b + -2x

-b -5x

500

50x -100x +3 + -10x -5

-60x -2

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