Distribute the negative sign

Combine like terms
-9x^2 + 7x^2 = -2x^2
9x - 3x = 6x
13 - 6 = 7

<u>Answer</u>

Answer:

Step-by-step explanation:
1/30 × 100% = 3 1/3%
Volume of the cylinder = πr²*h
V = π*5²*12=300π cm³ ≈ 942 cm³
First off, you have to find a common denominator between 6 and 9 which is 18, so to rewrite your equation using the common denominators it would be 15/18+(-8/18)-(-36/18) when you combine these it equals (7/18)-(-36/18)=43/18