To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.

9z + 5 = -6 - 3z
9z = -6 - 3z - 5
9z + 3z = -6 - 5
12z = -11
z = \( \frac{-11}{12} \)
z = -\(\frac{11}{12}\)

Perimeter is equal to the sum of the four sides:

p = a + b + c + d
p = 5 + 1 + 8 + 6
p = 20

To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.

(6a)(4ab) + (5a²)(9b)
(6 x 4)(a x a x b) + (5 x 9)(a² x b)
(24)(a¹⁺¹ x b) + (45)(a²b)
24a²b + 45a²b
69a²b

A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.

The formula for area is πr². Radius is circle \( \frac{diameter}{2} \):

r = \( \frac{d}{2} \)
r = \( \frac{4}{2} \)
r = 2
a = πr²
a = π(2²)
a = 4π