The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.

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.

4b - 8 = \( \frac{b}{-7} \)
-7 x (4b - 8) = b
(-7 x 4b) + (-7 x -8) = b
-28b + 56 = b
-28b + 56 - b = 0
-28b - b = -56
-29b = -56
b = \( \frac{-56}{-29} \)
b = 1\(\frac{27}{29}\)

The entire length of this line is represented by AD which is AB + BD:

AD = AB + BD

A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.

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.

(9a)(8ab) + (2a²)(7b)
(9 x 8)(a x a x b) + (2 x 7)(a² x b)
(72)(a¹⁺¹ x b) + (14)(a²b)
72a²b + 14a²b
86a²b