Solving One Step and Two Step Equations

One-Step: Additive Inverse

100

x + 5 =9 

x =4

200

w - 11 = 4

w = 15

300

-5 = t - 9

 t = 4

400

 -49 + n = 63

n = 112

500

 -4.2 = z + 2.1

z = -6.3

One-Step:Multiplicative Inverse

100

 6x = 42

x = 7

200

y/3 = 18

 y = 54

300

 -8c = 72

 c = -9

400

 -252 = -14y

 y = 18

500

 c/8 = -20

c = -160 

Two-Step Equations

100

5n - 9 = 71

 n = 16

200

 x/2 + 3 = 9

x =12

300

 3y -4 =14

 y = 6

400

5x -(-1) = -41

x = -8

500

 -4m + (-48) = 36 

 m = -21

Two Step Equations

100

p/3 - 7 = -17

 p = -30

200

8x + 22 =94

 x = 9

300

-15 = -4m + 5

m = 5

400

x/4 - 8 = 2

x = 40

500

25+x/4=26

What is x=4?