What does 3×–9+–3–8 equal

3x−20

Step-by-step explanation:

3x−9+−3−8

Subtract 3 from −9 to get −12.

3x−12−8

Subtract 8 from −12 to get −20.

3x−20

+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