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100

a + 4 = -1

a = -5

100

-6 - 2m = 10

m = -8

100

6 = X/4 +2

x = 16

100

2(n+5) = -2

n = -6

100

-10 +7x +x = -50

x = -5

200

z - 5 = -8 

z = -3

200

5X + 20 = 105

x = 17

200

-4 = x/20 -5

x =20

200

-10 = 10 (x -9)

x = 8

200

6+3x+4x= 34

x = 4

300

x - 11 = 16

x = 27

300

2x +5 = 27

x = 11

300

-2 = 2+ x/4

-16 = x

300

7 (9+x) = 84

X = 3

300

2+7x+3x = 72

x= 7

400

418 = -22a

-19 = a

400

4x -14 = 122

x = 34

400

-6 + x/4 = -5

x = 4

400

-243 = -9 (10+x)

17 = x

400

-43 = 3x + 4x -8

-5 = x

500

5x = 125

x = 25

500

3x -17 = 124

x = 47

500

n-6/3 = -4  

n = 18

500

144 = -12 (x+5)

-17 = x

500

3x +4 +2 = 9

x = 1