Alguno que me lo resuelva?

<img src="https://tex.z-dn.net/?f=%203%5E%7B2%7D%2Bx%2B5-2%20%3D%2050%20" />

9 + x + 3 = 50

x + 12 = 50

x = 50 - 12

x = 38

5 - 15 : 3 + 4 + x = 25

5 - 5 + 4 + x = 25

4 + x = 25

x = 25 - 4

x = 21

x + 45 : 9 - <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B9%7D%20" /> + 6 = 16

x + 5 - 3 + 6 = 16

x + 2 + 6 = 16

x + 8 = 16

x = 16 - 8

x = 8

(5 + 1)<img src="https://tex.z-dn.net/?f=%20%5E%7B2%7D%20" /> - 9 + x = 35

36 - 9 + x = 35

25 + x = 35

x = 35 - 25

x = 10.