Need help with 3 easy math problems

Step-by-step explanation:

1) 3p + 5 = 14

3p = 14 - 5

3p = 9

p = 9/3

⇢ p = 3

2)

m/7 - 3 = 0

m/7 = 3

m = 3 × 7

⇢ m = 21

3) 8 + x/2 = -7

x/2 = -7 - 8

x/2 = - 15

⇢ x = -30

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x